Account 551: what it is, entries and how to regularize it

The account 551 of the General Accounting Plan is one of the accounts that generates the most doubts in the accounting of Spanish companies. It records cash movements between a company and its partners or administrators that do not fit into other more specific items, such as formalized loans or payrolls. Its apparent simplicity hides tax and accounting implications that, if overlooked, can lead to serious problems with the Tax Agency.

In Gestoría G1, specialists in tax, labor and accounting services for autónomos and companies, we help our clients to correctly manage this type of items and avoid the risks that a poor accounting management can cause. Knowing thoroughly how this account works is the first step to keep the company in order.

What is account 551 and where does it fit in the General Accounting Plan?

The account 551 belongs to group 5 of the General Accounting Plan approved by Royal Decree 1514/2007, which includes financial accounts. Within that group, it is located in sub‑group 55, dedicated to «other non‑bank accounts».

Its official denomination in the chart of accounts is «Current account with partners and administrators». It is important not to confuse this name with the joint description that the PGC offers for the operation of accounts 551 and 552, which talks about «cash current accounts». They are different things: one is the name of the account and the other is the explanation of its operating mechanism.

Purpose of account 551

This account records cash transactions between the company and its partners or administrators that do not have a commercial nature nor fit into other accounts of the plan, such as 170 (long‑term debts with credit entities) or 465 (remunerations pending payment).

Among the usual operations that are channeled through 551 are:

• Informal loans or cash advances that a partner grants to the company.
• Payments made by the company on behalf of the partner (personal expenses covered by the company).
• One‑off liquidity contributions made by the partner to cover cash‑flow gaps.
• Transfers of money from the company to the partner without a loan agreement or payroll.

In short, account 551 acts as a provisional «catch‑all» that gathers cash flows pending classification or contractual formalisation. Precisely for this reason it requires special attention and periodic review.

Difference with other similar accounts

The account 551 is sometimes confused with other accounts in the chart of accounts. It is advisable to clarify the most relevant differences:

Knowing these differences prevents classification errors that, although they may seem minor, have consequences for the presentation of the financial statements and the company's taxation.

Accounting operation of account 551: debits and credits

The General Accounting Plan clearly establishes the general mechanics of this account. Understanding when it is debited (debe) and when it is credited (haber) is essential for constructing the entries correctly.

When account 551 is debited (debit)

The 551 account is debited when the company makes a delivery or payment to the partner or administrator. That is, when the money leaves the company to the partner, the 551 account reflects that claim the company acquires against él.

The offset entry is always made against an account from sub‑group 57 (cash), since the transaction involves a cash outflow.

Example: the company pays €3,000 from its bank account to the partner without a prior contract.

(551) Partners current account 3,000 to (572) Banks 3,000

When account 551 is credited (credit)

The 551 account is credited when the partner or administrator makes a cash aportación to the company. In this case, the company receives money and recognizes the debt it has towards the partner.

Similarly, the offsetting entry is an account from subgroup 57.

Example: the partner transfers €5,000 to the company's bank account to cover a cash flow shortfall.

(572) Banks €5,000 to (551) Partners' current account €5,000

The resulting balance and its position in the balance sheet

Depending on the sign of the balance at closing, account 551 occupies different positions in the balance sheet:

• Debit balance: the partner or administrator owes money to the company. This balance appears in the current assets of the balance sheet, within «credits with related parties» or other similar denominations.
• Creditor balance: the company owes money to the partner or administrator. This balance appears in the current liabilities, reflecting a short‑term debt of the company.

It is important to underline that the General Accounting Plan prevé expressly both situations at the end of the fiscal year. Having a balance in account 551 on December 31 is not in sí itself an accounting or tax infringement: the relevant thing is that the balance is correctly classified, documented and justified.

Practical examples of accounting entries with account 551

Nothing better than concrete cases to understand how this current account is applied in practice. Below are described the most common scenarios we find in Spanish companies, especially in SMEs and family-owned businesses.

Payment of a partner's personal expense with company funds

A common situation: the company pays with its corporate card an invoice that corresponds to a personal expense of the manager (a home insurance, for example). That payment is not a deductible expense for the company, but it does create a right to collect from the partner.

(551) Partners' current account €1,200 to (572) Banks €1,200

This entry recognizes that the partner owes €1,200 to the company. If not regularized, the Tax Authority could consider it an undeclared benefit in kind.

Liquidity contribution by the partner

The partner deposits €10,000 into the company's bank account to help it overcome a cash‑flow tension, without formalising any loan agreement.

(572) Banks €10,000 to (551) Partners' current account €10,000

The company acknowledges that it owes €10,000 to the partner. If that amount is not repaid or formalised through a documented loan, it may raise doubts about its nature from a tax perspective.

Partial refund of the amount to the partner

Months later, the company returns €4,000 to the shareholder by bank transfer to cancel part of the debt recorded in account 551.

(551) Shareholders' current account €4,000 to (572) Banks €4,000

This charge reduces the account's credit balance. The outstanding balance (€6,000) will remain in current liabilities until its full cancellation or formalization.

Compensation with agreed dividends

If the shareholders' meeting decides to distribute dividends and the shareholder has a debit balance in account 551, it is possible to offset both positions. The offsetting entry would be:

(526) Dividend payable 2.000 to (551) Shareholders' current account 2.000

This offset simultaneously reduces the shareholder's debt to the company and the company's obligation to pay the dividend.

Debit balance vs. credit balance: accounting and tax implications

The difference between a debit balance and a credit balance in account 551 is not only accounting: it has very different implications from a tax and business management perspective.

Implications of a debit balance

When account 551 shows a debit balance, it means that the partner or administrator has received money from the company without a clear justificación or a documented contract. This situación can be interpreted in different ways by the Tax Agency:

• As an préstamo no formalizado, which should accrue interest at the market rate (the one that independent parties would agree upon under similar conditions).
• As a retribución encubierta to the administrator, subject to personal income tax and its corresponding withholdings.
• As an distribución de beneficios no declarada, with the tax consequences that it entails for both the company and the shareholder.

It is important to note that the tax reclassification is not automatic: it will depend on the specific case, the documentation provided and the underlying economic reality. However, the lack of documentary support makes any of those three interpretations a real possibility during an audit.

From Gestoría G1, where we analyze the most frequent financial errors that hinder business growth, we observe that maintaining unjustified debtor balances in account 551 is one of the recurring problems in small-sized companies

Implications of a credit balance

The creditor balance indicates that the company has a debt to the partner or administrator, normally arising from unformalized liquidity contributions. In this case, the risks are different:

• If the partner has lent money to the company without a contract, The Tax Agency may require that the operation be valued at market prices, which implies that interest should have accrued.
• If those interests have not been charged, a correction may arise corrección in the Corporate Tax of the company and in the income tax of the lending partner.
• A very high and persistent credit balance may be an indication that the company financially depends on its partners, which reflects structural weaknesses in its tesorería.

Regarding the issue of interest, it is advisable to be precise: the tax regulations on related-party transactions require valuing these operations at market price, that is, at the rate that independent parties would agree. The legal interest on money can be used as a practical reference in some cases, but it is not the only criterion nor the one that the law automatically imposes.

Tax risks of improper management of account 551

Account 551 is in the spotlight of the Tax Agency precisely because it is a common route to hide remuneration or extract value from the company without proper taxation. Identifying the specific risks helps to make preventive decisions.

Related party transactions and article 18 of the LIS

The transactions between a company and its partners or administrators are related transactions within the meaning of artícle 18 of the Corporate Tax Law. This means they must be valued at market price, regardless of the amount agreed between the parties.

If the Inspection finds that the company lent money to a partner without charging interest, or that the partner financed the company without receiving any, it may proceed to adjust the taxable base of both the company and the partner to reflect the interest that should have accrued.

Risk of reclassification as concealed remuneration

When an administrator repeatedly withdraws money from the company through account 551 without returning it, the Tax Inspection may conclude that those amounts actually constitute compensation for the performance of the position.

In such case, the company should have applied withholding on the personal income tax and paid the corresponding Social Security contributions. The cost of the regularization can be considerable.

Risk of classification as concealed dividend

If the amounts withdrawn exceed the market salaries of the administrator and occur when the company has profits, the Tax Inspection may treat those amounts as concealed dividend distribution, subject to withholding in the partner's personal income tax as capital income.

This risk is especially relevant in family‑type companies or those with a sole administrator partner. A proper tax planning of your company can anticipate these scenarios and neutralize them in time.

Is it mandatory to report the loan to the Commercial Registry?

The idea circulates that loans between partners and the company that exceed certain amounts must be reported to the Commercial Registry. This statement, as it is commonly phrased, does not have a clear and general regulatory backing.

What does exist is the obligation to disclose significant related‑party transactions in the notes to the annual accounts, whose scope and detail depend on the accounting model applied (full, abbreviated or simplified) and on the relevance or materiality of the specific transactions.

How to properly regularize account 551

Regularizing this account involves eliminating or justifying the pending balances so that they are accounted for and fiscally substantiated. There is no single solution: the most appropriate one will depend on the company's economic situation and the legal relationship underlying the transaction.

Cash repayment

The most direct solution. If the company has a creditor balance (owes money to the partner), it returns the amount by bank transfer and cancels the balance. If the balance is debtor (the partner owes the company), the partner refunds the money and the account is zeroed.

This mechanism is clean and easy to document, but it requires that both the company and the partner have sufficient liquidity to execute the repayment.

Formalization of a loan agreement

When it is not possible to return the money immediately, the usual alternative is formalize the debt through a loan contract between the company and the partner. That contract must include:

• The amount of the principal loaned.
• The agreed interest rate (always at market value to comply with linked operations regulations).
• The repayment period.
• The repayment conditions.

Once the contract is signed, the balance of account 551 is transferred to the corresponding account: account 170 if the loan is long-term, or account 520 if it is short-term. Account 551 is thus cancelled.

Contribution to net equity or capital increase

If the credit balance in account 551 represents liquidity contributions from the partner that will not be returned, another option is to convert those amounts into share capital or equity through a capital increaseó or a contribution to the reserves account.

This approach strengthens the company's solvency and eliminates the debt to the partner, although it involves following the formal procedure of statutory amendment or accounting recognition of equity.

Compensation with dividends

If the company has distributable profits and the shareholder has a debtor balance in account 551, it is possible to offset both positions: the company agrees to distribute a dividend and, instead of paying it in cash, it offsets it with the debt the shareholder has with it.

This solution is fiscally correct as long as the dividend is well documented in the shareholders' meeting agreement and the corresponding income tax withholdings are applied.

Capitalization of credits

A variant of the capital increase is the capitalization of loans: the shareholder who has lent money to the company (creditor balance in 551) converts that debt into equity shares or stocks. This requires following the formal procedures before a notary and the Commercial Registry.

It is a common solution when the company faces liquidity difficulties and the shareholders want to strengthen their position in the capital without making new cash contributions.

The importance of periodic regularization and the closing of the fiscal year

Although the PGC does not prohíbe that account 551 has a balance on December 31, maintaining it without review for añ years multiplies the risks. The reason is simple: the larger the accumulated balance and the more diffuse the documentation that supports it, the more arguments the Administración has to reclassify it.

Review before the accounting close

It is recommended to review account 551 prior to the fiscal year-end. This implies:

1. List all movements recorded during the year and verify that they are justified with documentation.
2. Determine the final balance and its nature (debtor or creditor).
3. Assess whether it is possible to cancel the balance in whole or in part before the closing.
4. If it is not possible to cancel it, formalize the debt through a loan agreement or adopt another of the described solutions.
5. Verify that the balance appears correctly classified in the statement: current asset if it is a debtor, current liability if it is a creditor.

This process is much más easier when accounting is kept up to día. If you need support to organize and review your accounting before the closing, at Gestoría G1 we have the necessary team to do it efficiently.

Information in the annual accounts report

The annual accounts include a memorandum in which the significant related party transactions. This includes the movements and balances derived from account 551.

However, the extensión of that información depends on the company's accounting model. Companies that apply the abbreviated or simplified model have obligations más reduced than those that prepare accounts under the normal model. Saying that this information must be detailed «always» and «in all cases» would be too categorical: the determining factor is the relevance and materiality of the operations in each specific case.

Warning signs you should not ignore

The balance of account 551 can be a symptom of deeper situations that should be identified in time:

• A growing and persistent credit balance indicates that the company depends on contributions from its partners to operate, which can be señal of structural tesorería problems.
• A recurring debit balance and without documentación suggests that the partners or administrators están extracting resources from the company without proper control, putting its solvency at risk.

Detecting these señales in time and acting with a clear financial strategy is essential. Having a external financial director who supervises the accounting and the tesorería of your company can make a significant difference in the gestión of these situations.

Account 551 in the context of self‑employed and SME accounting

Although account 551 belongs to companies (it does not directly apply to self‑employed individuals), its relevance is paramount in the Spanish business fabric, dominated by SMEs and micro‑SMEs with simple corporate structures.

Single‑member limited liability companies

In a single-member limited liability company, el único socio is also the administrator. This makes account 551 especially sensitive, because all cash transactions between the company and that person are reflected here.

The temptation to use the company's current account as if it were personal is common in this type of structure. However, from an accounting and tax perspective, the separation of assets is absolute: whatever the company pays to the partner, regardless of the concept, must have a clear justification.

Family companies with multiple partners

In companies with multiple partners or a family structure, account 551 can generate asymmetries: some partners may have a debtor balance while others have a creditor balance. Maintain an individualized record per partner or administrator using sub‑accounts (551.1, 551.2, etc.) is the most recommended practice to avoid confusion.

If you are autónomo who is valuing constituting a company and you want to understand cómo these issues affect your activity, it may be useful to review the resources of advisory for entrepreneurs and autónomos offered by Gestoría G1.

Implications in audits and external reviews

When a company is subject to an audit of accounts or seeks bank financing, the balances in account 551 attract the attention of auditors and risk analysts. A high balance without documentation can cause:

• Qualifications in the audit report due to lack of documentary support.
• Difficulties obtaining bank financing, as the bank may interpret it as a hidden liability or a resource extraction.
• Doubts about the true and fair view presented by the financial statements.

Keeping account 551 organized is not only a tax requirement: it is also a sign of good corporate governance.

Account 551 and pending items: a necessary distinction

In Spanish accounting practice, the term «pending application items» is frequently used to refer to cash movements that have not yet been definitively assigned to a chart of accounts. Account 551 shares this provisional nature, but it is not, strictly speaking, a «pending application items account» in the terms of sub‑group 57.

Pending items in the PGC

Within subgroup 57 of the General Accounting Plan there are specific accounts to record transfers or bank movements whose nature has not yet been determined. The account 555 «Pending items for application» is the one that the PGC reserves for those receipts or payments received in bank accounts that have not yet been reclassified.

The confusion between account 551 and pending items for application is common in small companies. The key difference is:

• The account 555 collects unidentified bank movements, of any nature and with any counterpart.
• The account 551 collects específicamente cash transactions with partners and administrators, although its balance is provisional while it is regularized.

Both share that they are of a transitory nature. Both should be reviewed regularly to prevent them from accumulating balances without adequate documentary support.

Why account 551 is associated with pending items for application

In practice, many accounting professionals use account 551 provisionally when a cash movement occurs between the company and a partner without it being clear yet what concept generates it. In this sense, account 551 acts functionally as a pending item: the movement is recorded to balance the cash and the final classification is left pending.

This provisional use is acceptable as long as it is regularized quickly. The error arises when this provisionality is perpetuated for months or entire fiscal years without the balance being classified or documented.

How to distinguish both situations in practice

To avoid confusing account 551 with a mere pending item, it is advisable to ask two questions before recording a transaction:

1. ¿Is the counterpart a partner or administrator of the company? If it is así, account 551 is the appropriate vehículo.
2. ¿Is the nature of the transaction already known? If the concept está clear (préstamo, nómina, dividend), the corresponding definitive account should be used and not 551.

A good practice is not to leave any transaction in account 551 for more than 30 days without definitive classification. Beyond that period, the lack of documentation begins to generate real tax risks.

Recommended minimum documentation to support the movements of account 551

Documentation is the factor that distinguishes a well-managed 551 account from one that can become a problem during a tax audit. It is not enough to record the entry: you must be able to prove that the transaction corresponds to a real operation with an economic justification.

Basic documents you should have

For each transaction recorded in account 551, it is advisable to retain:

• Bank statement that certifies the transfer or cash movement.
• Written contract or agreement between the company and the partner or administrator that explains the concept (préstamo, anticipo, devolución de gastos, etc.).
• Shareholders' meeting agreement if the transaction affects the distribution of profits or the approval of a remuneration.
• Invoices or expense receipts if the transaction corresponds to expenses paid by the partner on behalf of the company or vice versa.

The importance of a written contract in loans with partners

When the transaction is of a loan nature, the written contract is especially important. It must be signed by both parties, reflect the agreed interest rate, and the repayment schedule.

If the loan exceeds certain amounts, it may be advisable to elevate it to a public deed to reinforce its validity before third parties and the Administration. Although there is no general obligation to elevate these contracts to a public deed, doing so provides additional legal security that can be very useful in case of a dispute with the Tax Authority.

Retention of documentation and deadlines

The documentation supporting the movements of account 551 must be retained for the general tax prescription period, currently four years from the end of the filing deadline of the corresponding tax return. However, if the balance persists on the balance sheet and the transactions are ongoing, it is advisable to keep all documentation while there is an active balance and for up to four years after its final cancellation.

Common errors in managing account 551

Throughout our experience advising Spanish companies of different sizes, we have identified a set of errors that frequently recur. Knowing them helps to avoid them before they become a real problem.

Using account 551 as a substitute for a personal checking account

Many sole-company administrators use the company's bank account interchangeably for professional and personal expenses. Each personal expense that goes through the company must be recorded in account 551, creating a debit balance that reflects what the partner owes to the company.

If that balance grows unchecked and is not regularized, it can end up being reclassified by the Tax Agency as concealed retribución. The solution is simple but requires discipline: radically separate personal and business accounts from the first día.

Do not individualize it per partner when there are multiple partners

Recording all transactions with different partners in a single account 551 without sub‑accounts creates a mix of balances that is very difficult to audit. If partner A has lent money to the company and partner B has received advances, the account may show an apparently balanced net balance that hides two very different situations.

Opening sub‑accounts (551.1 for partner A, 551.2 for partner B) is a basic practice that avoids this type of confusion without requiring any significant additional effort.

Forget to record interest on loans between partners and the company

When the debt recorded in account 551 is formalized as a loan, it must be remembered that the interest must also be accounted for. Omitting accrued interest is a mistake that the Tax Inspection can easily detect by cross‑checking the accounting data with bank transactions.

Interest in favor of the partner (when él lends to the company) is recorded as a debit to account 662 «Interest on debts» and credit to account 528 «Short-term interest on debts with related parties» or similar. Interest in favor of the company (when it lends to the partner) is recorded as financial income in group 7.

Do not document the regularization

Even when the company correctly cancels the balance of account 551 by refund, compensation or capital increase, if that regularization is not documented (bank transfer, board agreement, contract), it can be difficult to justify it in a later inspection. Each regularization must have a clear and traceable documentary record.

Frequently asked questions about account 551

These are some of the queries we receive most frequently at Gestoría G1 related to the operation of account 551 of the General Accounting Plan.

Can account 551 have a balance at the close of the fiscal year?

Yes. The General Accounting Plan does not require account 551 to be zero at the end of the fiscal year. What is essential, however, is that the balance be documented, correctly classified in the financial statements, and supported by a clear economic justification. An undocumented balance is the main risk factor.

Does account 551 generate a tax withholding obligation?

It depends on the economic nature of the transaction. If the charges in account 551 correspond to a remuneration to the administrator, the applicable income tax (IRPF) withholdings should have been applied. If they correspond to a loan, in principle they do not generate a withholding obligation, although they may generate the obligation to allocate interest at market price.

What happens if account 551 has a very old balance?

A very old balance without documentation to justify it is a top‑level warning sign. In an audit, the Administration may reclassify that balance according to the interpretation that best fits the facts: undeclared remuneration, interest‑free loan, concealed distribution of profits. The regularization must be carried out as soon as possible, even if it entails assuming some tax cost.

Can a self‑employed individual use account 551?

Not in the strict sense of the General Accounting Plan, which applies to companies. However, self‑employed individuals under the normal direct estimation who keep formal accounting can use an analogous account to record movements between their personal and business assets, although the nature of those movements is different because there is no separation of legal personality.

Can the balance of account 551 be offset with the administrator's salary?

Yes, it is possible to offset balances of account 551 with remuneration accrued to the administrator, provided that such remuneration is properly agreed upon in the bylaws or by the shareholders' meeting, is consistent with the services rendered, and the corresponding withholdings have been applied. The offset must be reflected through the appropriate accounting entry.

Conclusion

Account 551 of the General Accounting Plan is a legitimate and necessary accounting tool to reflect the economic relationships between a company and its partners or administrators. Its transitional nature and fiscal sensitivity, however, make it one of the accounts that requires the most attention and discipline in the daily management of corporate accounting.

If your company maintains balances in this account, the first step is to verify that all those movements are backed by documentation and that the balance is correctly classified in your balance sheet. The second step is to assess whether it is advisable to regularize them before the end of the fiscal year and by which mechanism: refund, formalization of a loan, compensation with dividends, or capital increase.

Proper management of account 551 not only avoids problems with the Tax Agency, but also improves your company's financial image before banks, auditors and potential investors. Transparency in transactions with related parties is also a sign of good governance that strengthens confidence in the company in the long term.

Contact Gestoría G1, experts in accounting and tax for companies

Gestoría G1 is a gestoría española specialized in tax, labor, legal and extranjería services for autónomos, companies, individuals and foreigners not resident. We operate nationwide through a platform in the cloud available 24 hours, with oficinas físicas in Mallorca, Madrid, Barcelona, Málaga and Vigo, and atención al cliente in five languages: español, inglés, ale

If you need to review and regularize account 551 of your company, prepare the fiscal year closing, or resolve any doubt related to the tax aspects of linked operations, at Gestoría G1 we can help you with the speed and rigor your company needs. Contact us today and one of our specialists will analyzeá your situación without commitment.