Can't Pay Your Modelo 303? How to Defer or Split a Debt With the Spanish Tax Agency

The last day of the deadline arrives, your modelo 303 comes out to pay and the account doesn’t stretch that far. Maybe a big client paid late, maybe the quarter was good on invoices and bad on collections. What matters is what you do in the next few hours, because there are two ways to get it wrong (not filing, and filing without asking for anything) and one way to get it right: file the return and ask for a deferral or instalment plan within the deadline.

This article answers the questions in the order they come up: whether it’s possible, which debts are excluded (more than you’d think), when and how to ask, whether you need a bank guarantee, what it costs, and what happens if you miss a payment afterwards.

Can you defer or split a tax debt?

Yes, but not on a whim. Spain’s General Tax Law (Ley General Tributaria) lets debts be deferred or split, in the voluntary or enforcement period, at the taxpayer’s request, “when their economic and financial situation temporarily prevents them from paying within the established deadlines”.¹

Two words, two different things. Deferring (aplazar) means paying the whole debt later, on a single date. Splitting (fraccionar) means paying it in several instalments. And the key is “temporarily”: you ask for it for a liquidity gap, not for structural insolvency. Further down you’ll see that, if you stop making the payments you proposed while the request is being processed, the Tax Agency (Agencia Tributaria) can reject it on the grounds that the difficulties are structural.

A scope note: here we are talking about debts with the Tax Agency. The collection regulation says that, in general, “all tax debts and other public-law debts owned by the Treasury” can be deferred or split, “except for the exceptions provided by law”.²

Which debts CANNOT be deferred

This is the part that surprises most autónomos (self-employed workers). The law lists the debts that admit neither deferral nor instalments, and two of them hit everyday life:³

• Withholdings. Excluded are “those relating to tax obligations that must be met by the withholding agent or the person obliged to make payments on account”. In other words, what you pay in with the modelo 111 for the withholdings you make on others cannot be deferred.
• Taxes that must be passed on to the customer, such as VAT, with one exception. The exclusion covers “those arising from taxes that must be legally passed on, unless it is duly shown that the quotas passed on have not actually been paid”. VAT is a tax you must charge to your customer on the invoice,⁴ so this rule affects your 303 directly.

If your problem is the modelo 303, the honest reading is this: VAT you have charged and already collected cannot be deferred. VAT you have charged and not collected may be, but you have to “duly show” that the customer hasn’t paid. So keep the unpaid invoices and any evidence of non-payment before you ask for anything.

There is a question the law doesn’t settle in that article: your 303 is a balance (VAT charged minus VAT paid), and the text doesn’t say how the “charged” part is allocated within that net figure. We found no guidance that closes it, so we don’t claim anything: if your debt is VAT, ask your adviser or the Tax Agency itself how they apply it to your case.

What does appear in the exclusion list are the instalment payments of Corporate Income Tax,³ but not personal income tax (IRPF) instalment payments. So the literal list does not mention an autónomo’s modelo 130.

If what is choking you is VAT on invoices you haven’t yet collected, the answer may not be deferring but changing when VAT becomes due: we explain it in the article on cash-basis VAT.

When to ask: the order matters

This is where people lose the deferral without knowing it. There are three calendar rules.

1. File the return first. If the debt comes from a self-assessment (the 303, the 130), the request is inadmissible if the return hasn’t been filed beforehand or at the same time.⁵ You can’t ask for time on a return you haven’t filed.

2. Ask within the payment deadline. For debts in the voluntary period, the request must be submitted “within the deadline set for payment”.⁶ Don’t wait for the last day: the request has information and documents to gather.

3. If you file late, ask at the same time. For self-assessments filed after the deadline, the regulation only treats the request as being in the voluntary period “when the request for deferral or instalments is submitted together with the late self-assessment”.⁶ It matters because, if you file a return with a balance due and no payment, the enforcement period starts the day after the payment deadline ends or, if it already ended, the day after you file.⁷

And if you are already in the enforcement period? You can still ask: up to the moment the agreement to sell the seized assets is notified.⁶ With nuances: for instance, the guarantee, when required, must also cover the enforcement-period surcharge.⁸

What happens while you wait

Filing the request in the voluntary period has one good effect and one that is easy to forget:

• Good: it prevents the enforcement period from starting while the request is processed.⁷
• Easy to forget: it does not stop late-payment interest.⁹ It runs from the day after the voluntary deadline ends.

In addition, while the request is processed you must pay the instalment(s) you yourself proposed. If the Agency thinks it will take long, it can set a provisional payment schedule that replaces yours; and if you miss any of those payments, it can reject the request on the grounds of structural economic and financial difficulties.¹⁰

The decision must be notified within six months, and if that passes without an answer you may treat the request as rejected for the purpose of appealing.¹¹ One caveat: the interest freeze the law provides when the Administration is late does not apply to the deadlines for deciding deferrals and instalment plans.¹² While you wait, interest keeps accruing.

Do you need a bank guarantee?

It depends on how much you owe. The general rule is that the Administration may require a joint-and-several guarantee from a credit institution or mutual guarantee company, or a surety insurance certificate. If you show you can’t obtain one, or that providing it seriously compromises the viability of your business, it can accept other guarantees (mortgage, pledge, personal joint-and-several guarantee or others deemed sufficient).¹³ When required, the guarantee covers the debt, the late-payment interest and a further 25% of the sum of both.⁸

But there is an exemption by amount, and it settles most autónomo cases: no guarantee is required for deferral or instalment requests whose amount, in aggregate, does not exceed 50,000 euros, in both the voluntary and enforcement periods.¹⁴ Mind the “in aggregate”: the debts in the request are added to other debts of the same debtor with a pending request and to the outstanding instalments of debts already deferred or split that are not guaranteed.¹⁴ If you already have a plan running, add it up.

This threshold is set by a ministerial order and has been updated over the years (the current one replaced an earlier one that set it at 30,000 euros), so check the BOE (Spain’s official gazette) before counting on it.¹⁴

What it costs

What a deferral or instalment plan generates is late-payment interest. It is calculated for the time from the day after the voluntary payment deadline ends to the due date of the granted period. With instalments, it is calculated for each instalment, and the interest on each is paid together with it.¹⁵

The rate is, as a general rule, the legal interest rate on money plus 25%, unless the State Budget Law sets a different one.¹⁶ And one detail makes it cheaper: if you guarantee the whole debt with a joint-and-several guarantee from a credit institution, a mutual guarantee company or surety insurance, the interest charged is just the legal interest rate.¹⁷

An example to see the mechanics, with an assumed 4% annual rate, purely illustrative (it is not the current one: the real one changes by law): you owe €1,200 and are granted 4 instalments of €300 due 1, 2, 3 and 4 months after the voluntary period ends. Interest is 300 × 4% × (1 + 2 + 3 + 4) / 12 = €10 in total. Compare that with the enforcement surcharge for neither paying nor asking, which is 5% of the debt if you pay before the notice of enforcement is served (€60 on the same €1,200), and which then rises to 10% or 20%,¹⁸ and the deferral is much cheaper.

What the request looks like

This is the map for when you already have the online portal open. The request must state, at a minimum:¹⁹

• your details, those of the debt (amount, type and the date the voluntary period ends) and, if a representative acts, theirs;
• the reasons for the request;
• the periods and conditions you propose;
• the guarantee you offer (or the request for an exemption);
• the direct-debit order, where the Administration has made it mandatory;
• place, date and signature.

And you must attach the guarantee commitment or the documents for the guarantee you offer, powers of representation if applicable, the self-assessment form, and evidence of your temporary economic and financial difficulties.¹⁹ If something is missing, you will be asked to fix it within 10 days; if you don’t comply, the request is deemed not filed.²⁰

When it is granted, the due dates fall on the 5th or the 20th of the month, and the decision may set periods and conditions different from those you asked for.²¹

If it’s refused, or you miss a payment

If it’s refused in the voluntary period, a new payment window opens. If you don’t pay in it, the enforcement period starts; if you do pay, interest is calculated up to the payment date.²² The refusal can be challenged by an appeal for reconsideration or an economic-administrative claim.²²

If it was granted and you stop paying: with a deferral, the enforcement period starts the day after the missed due date and you are asked for the debt, the interest and the enforcement surcharge.²³ With an instalment plan granted with a full guarantee exemption, the missed instalment goes to enforcement with its surcharge, and if you don’t pay that either, all remaining instalments fall due.²³

Hence the practical rule: ask for payments you can meet, even if they are longer, because a single missed instalment turns an agreement into a potential seizure.

What not to do

• Not filing the return so as to “owe nothing yet”. The request is inadmissible without a filed self-assessment,⁵ and filing late costs surcharges that grow each month.
• Filing the return and letting the deadline pass without asking. The enforcement period starts, and with it the 5, 10 or 20% surcharges.^{7 18}
• Repeating the same refused request without changing anything. It is inadmissible if there’s no substantial change, especially if it aims to delay collection.²⁴

How Cuéntamo helps

The best deferral request is the one you don’t need. The 303 and the 130 shouldn’t be a surprise: they can be estimated weeks ahead from your invoices and expenses. Cuéntamo calculates each quarter’s return and includes it in your balance forecast, so you see on what date the tax payment leaves you overdrawn, and you can decide then (with time) whether to set money aside, bring a collection forward or prepare the request. You can try it free at cuentamo.com.

Frequently asked questions

Can I defer the modelo 303?

It depends on what it contains. The law excludes debts arising from taxes that must be passed on, such as VAT, unless you show the VAT charged has not been collected. If your problem is that a client hasn’t paid the invoice, that evidence is the basis of the request.

Can the modelo 111 be deferred?

No. Withholdings that the withholding agent, or whoever makes payments on account, must pay in are excluded by law from deferral and instalments.

How much can I ask for without a guarantee?

Up to 50,000 euros in aggregate, adding the debts in the request, other debts with a pending request and the outstanding instalments of debts already deferred without a guarantee. The amount is set by a ministerial order, so check the BOE to see it is still in force.

Does interest stop while I wait for an answer?

No. Filing the request in the voluntary period prevents the enforcement period from starting, but late-payment interest keeps accruing, and the six-month period for deciding does not suspend it.

What happens if I don’t pay an instalment?

The missed instalment goes to enforcement with a surcharge, and if you don’t pay that either, the remaining instalments fall due. It is better to ask for smaller, longer instalments than to promise what you can’t meet.

References

This article is checked against official sources and reviewed periodically. If you spot anything out of date, email us at [email protected].