The Mandatory Record Books for Autónomos in Estimación Directa Simplificada (and How to Stay Sane With Them)
If you’re an autónomo (self-employed worker) under the estimación directa simplificada regime (simplified direct assessment), the Spanish Tax Agency (Agencia Tributaria) requires you to keep four record books of your economic activity. They’re not optional, and they’re not meant to be tucked away in a drawer. They’re documents that the Agencia Tributaria can request at any time, and they have to be filled in correctly.
That said: keeping them doesn’t have to be complicated. The usual problem isn’t technical complexity but not knowing what goes into each one, or letting months pile up without updating them. That’s what turns something manageable into chaos.
The four books you must keep
Before we get into the detail: how you keep your business bookkeeping depends a lot on your territory. The four classic books are the common-territory model (and, with its own rules, Navarre’s); in the Basque Country the system is different and more digital:
Royal Decree 439/2007 establishes four record books for autónomos under direct assessment: income, expenses, capital goods, and provisions of funds and disbursements. That’s exactly what this article covers.
In Navarre the obligation is equivalent —the same four books— but set by its own rules (Orden Foral 17/2021), not the state Royal Decree. The mechanics we explain here apply; what changes is the legal reference and some format details.
In Bizkaia you don’t keep the four traditional books: since 2024 the Batuz system is mandatory. Instead of separate books, you keep a single electronic Record Book of Economic Operations (LROE) on the Provincial Council’s electronic office, and you file it with modelo 140 (electronically, in February, with the previous year’s data). The concept in this article (recording income, expenses and assets) still applies; what changes is that everything goes into a single electronic record.
In Gipuzkoa, on top of your records, TicketBAI is mandatory since 1 June 2023: your invoicing software signs a file (XML) for each invoice and sends it to the Provincial Tax Authority at the moment you issue it. The logic of recording your operations that this article explains still applies, but invoicing and record-keeping are integrated into that electronic system.
In Álava TicketBAI is mandatory: your invoicing software signs a file (XML) for each invoice and sends it to the Provincial Tax Authority when you issue it. The logic of recording your operations that this article explains still applies, but integrated into that electronic system. Confirm the detail with the Álava Provincial Tax Authority.
Coming back to the four-book model (common territory and Navarre), they are these:
1. Income book
Here you record all the invoices you issue to your clients. For each invoice, you must note down:
- Invoice number and date.
- Client details: name or company name and NIF (tax ID number).
- The nature of the transaction.
- Taxable base.
- VAT rate applied and VAT amount.
- IRPF (personal income tax) withholding, if any.
- Total amount.
The order must be chronological and the numbering sequential. There can be no gaps in the numbering or out-of-order entries without justification.
One important detail: if you have simplified invoices (cash-register receipts, for example, when you’re on the seller’s side), they must also be recorded, although with fewer details.
2. Expenses book
Here you record the invoices you receive from your suppliers and all deductible expenses related to your activity. The details to note for each expense:
- Expense date and invoice date (they can differ).
- Supplier details: name and NIF.
- The nature of the expense.
- Taxable base.
- Input VAT (IVA soportado) amount.
- Total amount.
Not all expenses are deductible. Only those related to the economic activity and properly supported by an invoice. A cash-register receipt with no tax details isn’t enough to deduct the expense.
A common warning: mixed expenses (those with both a personal and a professional component, like your mobile phone or your car) are only deductible in the proportion corresponding to the activity. The Agencia Tributaria has specific criteria on this, and it’s best not to get creative.
3. Capital goods book
This book covers the assets you use in your activity that are depreciated over time, rather than being deducted in full in the year of purchase. These are goods with a significant value and a useful life longer than the fiscal year: computer equipment, machinery, office furniture, vehicles used for the activity.
For each capital good you must record:
- Description of the asset.
- Acquisition date and corresponding invoice.
- Acquisition value.
- Depreciation percentage applied (in accordance with the official Agencia Tributaria tables).
- Annual depreciation amount.
- Accumulated depreciation and net book value.
The Agencia Tributaria’s depreciation tables set the maximum percentages by type of asset. A computer, for example, can be depreciated over a maximum of 5 years. A vehicle, over 14. You’ll find the tables and worked examples in the depreciation guide for the self-employed. Applying a higher percentage than allowed without justification is a mistake that can lead to penalties.
4. Book of provisions of funds and disbursements
This is the least-known of the four and the one that causes the most confusion.
Provisions of funds (provisiones de fondos) are amounts you receive from a client as an advance to cover expenses you’ll incur on their behalf (for example, a lawyer who receives money from a client to pay court fees). Disbursements (suplidos) are those expenses you actually make on the client’s behalf and then pass on to them.
Neither provisions of funds nor disbursements are part of your taxable base: they’re amounts you collect and spend on behalf of a third party, not your own income. That’s why they have a separate record.
If your activity doesn’t involve this type of operation (which is the case for most freelancers and service-based autónomos), this book can remain empty. But it must exist as a book, even if it has no entries.
The most common mistakes
Confusing the bank-movement date with the invoice date. They’re different things. The invoice date is what determines which fiscal period the income or expense is recorded in. The collection or payment date may be different.
Not recording invoices because the amount is small. There’s no minimum threshold. A 5-euro expense, if it’s professional and has an invoice, goes into the expenses book.
Leaving out expense invoices because “the accountant already has them.” The record book is yours, even if a third party manages it. If the Tax Agency asks for it, you’re the one who answers for its contents.
Numbering with gaps. If an invoice is voided, it isn’t deleted: a corrective invoice is issued. Gaps in the numbering raise questions in an inspection.
Depreciating a capital good as a direct expense. If you buy a computer for 1,200 euros, you can’t deduct those 1,200 euros in the year of purchase. It goes into the capital goods book and is depreciated over time.
The ideal update frequency
The books must be up to date before filing each quarterly return. In practice, the most efficient approach is to record each invoice the moment it’s issued or received, not to leave it until the end of the quarter.
Leaving three months of invoices for a single day has a high cost: you have to recover documentation, remember details, hunt for invoices you may not have stored properly. Recording them immediately eliminates that problem almost entirely.
Format and retention
The record books can be kept on paper or in electronic format. If they’re digital, they must be printable or exportable in a legible format. The Agencia Tributaria doesn’t require a specific format, but it does require the data to be complete and properly organized.
They must be kept for the tax statute-of-limitations period, which is generally four years from the date the corresponding return was filed. In practice, it’s wise to keep them longer: if there’s any discrepancy in a review, having records from several years back can be decisive.
Cuéntamo automatically generates the four record books from the transactions you record, in the format the Agencia Tributaria requires and ready to export to Excel. The dates, the sequential numbering, the tax details of each operation: it all comes straight from what you’ve already recorded. If the data is entered correctly, the books come out right.
How does Cuéntamo help with this?
The hard part of keeping record books isn’t understanding what they are (you’ve just read that) but keeping them current without missing an operation or messing up the numbering. Cuéntamo flips the order: you record your day-to-day transactions, tagging the ones that belong to the business, and the four books (income, expenses, capital goods, and provisions) build themselves from there.
Each invoice can carry its own tax amount and details (VAT rate, withholding, invoice number, date) and link to the actual bank transaction that paid it. The third-party directory stores the tax ID of your clients and suppliers so you don’t have to type it again, and it fills in on its own as you record operations. When the data is entered correctly, there’s nothing to “close” at the end of the quarter: the books are already there.
And when you need them for a review or for your accountant, you export them to Excel in one click, each book in its own format. If you want to see how all of this fits with separating your personal and professional finances, we cover it in this other article.
You can try it for free at cuentamo.com.
Frequently asked questions
What are the four mandatory record books for freelancers under direct estimation?
The income book, the expenses book, the capital goods book, and the book of provisions of funds and disbursements. That’s the model of the common territory (Royal Decree 439/2007) and of Navarre (with its own rules). In the Basque Country the system is different: in Bizkaia you keep a single electronic Record Book of Economic Operations (Batuz, modelo 140), and in Gipuzkoa and Álava TicketBAI applies (signed electronic invoicing). You have the detail by territory at the start of the article.
Do I have to keep the book of provisions and disbursements even if I don’t use it?
Yes. If your activity doesn’t involve advances or expenses on a client’s behalf (the case for most freelancers), the book can stay empty, but it must exist as a book.
Can I deduct a whole computer in the year I buy it?
Generally, no. A capital good with significant value and a useful life longer than a year goes into the capital goods book and is depreciated over time, according to the official Agencia Tributaria tables; deducting it all at once is usually a mistake that can lead to penalties. There are exceptions (low-value assets up to 300 euros and, if your activity genuinely qualifies as R&D —a very strict test—, the assets assigned to it can be deducted in full in the year of purchase), which we explain in the depreciation guide for the self-employed.
How often should I update the record books?
They must be up to date before filing each quarterly return, but the most efficient approach is to record each invoice the moment you issue or receive it. Leaving three months of invoices for a single day has a high cost in time and errors.
How long do I have to keep the record books?
For the tax statute-of-limitations period, which is generally four years from the date the corresponding return was filed. In practice, it’s wise to keep them longer, in case any discrepancy arises during a review.
Figures for 2026. The simplified depreciation table has been in force since 1998, and the four-year tax statute of limitations (art. 66 of the General Tax Law) since 1999.
This article is checked against official sources and reviewed periodically. If you spot anything out of date, email us at [email protected].