Give each rental cost the evidence it needs

A landlord’s bank statement tells you what was paid. It does not, by itself, tell you what can be deducted from rental income. The tax treatment depends on the owner, the letting, the expense and the period concerned. Putting those facts beside each invoice is a useful first step towards a return that can be explained later.

This guide focuses on organising expenses for an individual owner and distinguishing the resident and non-resident routes. It is not a promise that a particular cost will qualify. Read it alongside resident rental income or non-resident rental income, according to the taxpayer’s position.

Establish the taxpayer and the property use

Prepare a short factual summary before building the expense spreadsheet. Record the owner’s share, tax residence for the relevant year, property address, contract type, rental periods and any private occupation. Note whether services or the scale of the activity require a different analysis from ordinary property letting.

Do this separately for each owner. A couple can share a home and still need individual tax calculations. The rent arriving in one account does not establish that only the account holder has taxable income. Ask the adviser to confirm the allocation using the ownership documents and relevant rights.

A resident individual’s IRPF calculation must not simply be copied into a non-resident IRNR return. The availability of deductions differs, including by the non-resident taxpayer’s country of residence and applicable rules. Resolve that issue before treating your list of costs as a list of tax deductions.

What the official resident guidance says

Agencia Tributaria’s deductible-expense guidance identifies necessary income-producing expenses and qualifying depreciation. Its examples include financing interest, conservation and repairs, certain non-state taxes and insurance. It distinguishes repairs from enlargement or improvement, and sets a property-level limit for interest, financing, repair and conservation expenses, with qualifying excess carried forward under the stated rules.

That is an outline of the resident framework, researched on 27 October 2026. It is not an instruction to deduct every payment in those categories without checking conditions, limits, allocation and the applicable tax year. The authority also links to its more detailed tax manual.

Give every cost a useful record

A practical expense register needs more than a total. Include the invoice date, supplier, property, description, gross amount, payment evidence and the period or work covered. Add the proposed category, any private element and a space for the adviser’s conclusion.

Keep the original invoice and the corresponding payment record together. A transfer labelled “work” gives very little information about what happened. A detailed invoice, quotation, scope and photographs can help explain the difference between fixing an existing installation and adding something new.

Where a supplier services several properties, ask for a sensible breakdown. Where a cost relates to a whole building, retain the community statement and explanation of the owner’s share. Clear evidence is useful even when the final conclusion is that the amount is not currently deductible.

Separate repairs from improvements

The everyday word renovation can cover very different work. Repainting a worn room, replacing a failed component, extending a building and changing its layout are not interchangeable tax categories. A single contractor invoice may contain more than one kind of expenditure.

Before the work starts, ask for itemised descriptions rather than one rounded project price. Preserve the condition report and the agreed scope. When circumstances change, keep the variation instruction. Those records make a later classification more reliable than trying to reconstruct the job from a photograph of the finished room.

Do not instruct the contractor to use a tax label that misdescribes the work. Ask the tax adviser to assess the facts and explain whether the cost belongs in a current expense calculation, a depreciation schedule, an acquisition-value record or another category. Our renovation budget guide helps organise project spending without prejudging its tax treatment.

Understand loan payments

A mortgage instalment can include repayment of borrowed capital as well as interest. Treating the entire instalment as an income expense confuses debt repayment with the cost of borrowing. Obtain the lender’s statement showing the components and reconcile it with actual payments.

Also establish what the borrowing financed. A loan secured on a rental property might have funded something unrelated to that letting. Conversely, a financing cost may need documentation beyond the address of the security. Give the adviser the loan agreement and evidence of the use of funds, rather than asking them to infer the purpose.

Keep this tax analysis separate from cash flow. Capital repayments still use cash even if they are not deductible rental expenses. The rental-yield calculator separates entered operating costs and debt payments for planning; its results do not determine a tax return.

Record mixed use and empty periods

Use a calendar showing each letting, private stay, change of tenant and other relevant period. Retain booking records or the signed tenancy, inventory and handover dates. Note when work prevented occupation and what evidence supports that description.

Do not apply a single fraction to every cost without checking whether that allocation fits the item and the relevant rules. An annual premium, a repair during a vacancy and a cost exclusively associated with a tenant’s stay raise different factual questions. Ask for the method and reasoning to be recorded.

For non-residents, periods outside letting can also require consideration of imputed property income. A property producing no rent for part of the year does not automatically produce no tax obligation.

Keep depreciation distinct from cash spending

Depreciation is a tax calculation concerning qualifying assets; it is not simply the amount paid to a supplier that year. Ask what base, percentage, period and asset records support any entry. Land, building components and separately supplied assets may need different treatment.

Keep a schedule that can be carried forward consistently. Record acquisition documents, relevant costs, improvements, commencement of rental use and earlier amounts claimed. If you change advisers, transfer that history with the underlying documents. Starting a fresh spreadsheet each year can hide duplicated claims or missing information.

For a jointly owned property, make the whole-property calculation and each owner’s allocation intelligible. A tidy supporting schedule is more useful than a single unexplained depreciation figure copied from last year’s return.

Use an evidence-led example

Imagine a landlord pays a manager, replaces a broken fitting and adds a new terrace enclosure during one year. These are fictional facts, not a tax ruling. Put each item on a separate line, attach the agreement or invoice and describe what it actually did.

The manager’s statement should distinguish gross rent, withheld charges and the net amount transferred. Otherwise, reporting only the bank receipt and then deducting the same management charge can count the fee twice. Reconcile the statement to the contract and bank movements before sending totals to the adviser.

For the fitting and enclosure, retain separate scopes and ask for classification. The example’s purpose is to show the information required. It does not establish that either payment qualifies for immediate deduction.

Review the return and preserve the explanation

Before filing, reconcile income, costs, ownership shares, use periods and any carried-forward amounts. Ask the preparer to identify excluded items and unresolved evidence. Keep the filed return, submission receipt, payment record and the supporting calculation in the same annual folder.

Use the tax-finance checklist to assign responsibilities and record questions. An organised file cannot guarantee an accepted deduction, but it makes the decision easier to review and prevents a cash payment from silently becoming an unsupported tax claim.

A short extract from the official source

depreciación efectiva

Source: Agencia Tributaria. The phrase concerns effective depreciation. It is a reminder to preserve the supporting asset calculation rather than deducting an unexplained amount.