Who pays Council Tax (IBI) in the year a property is sold?

What local regulations say about tax accrual

The IBI (Impuesto sobre Bienes Inmuebles) is a municipal property tax regulated by the Recast Text of the Local Finance Act (TRLRHL). Generally speaking, the tax obligation for the year is linked to the taxable person on the accrual date established by law and local ordinances. In everyday property sales, this conflicts with the economic logic of the transaction: one party enjoys the property for part of the year and the other transmits it for the remainder.

That is why the market does not expect the buyer to pay the full year's IBI if they move in during July, nor does it expect the seller to absorb all the months following the sale without compensation. The split is a matter of agreement and documented good faith.

Usual pro rata split between buyer and seller

The most common approach in title deeds and private contracts is:

• Seller: months from 1 January until the transfer date (or until the agreed key handover date).
• Buyer: months from that date until 31 December of the same financial year.

The exact criterion may vary: some agreements apportion by day, while others use full calendar months. What matters is that the amount and formula are clearly set out, rather than just a generic phrase such as "expenses to be split pro rata".

If the buyer pays the annual bill in advance to the local council to avoid surcharges, how the seller's share is reimbursed must be clearly reflected in the purchase price or via a separate transfer.

Bill already paid or outstanding on completion day

If the seller has already paid the IBI for the entire year and the sale takes place mid-year, the seller is usually compensated by the buyer for the months corresponding to the period after the transfer. If the tax bill has not yet been settled, the parties agree on who submits the self-assessment and how it is deducted from the price.

In transactions with an outstanding mortgage, do not confuse IBI with the monthly mortgage repayment under a single vague heading: they are separate obligations.

Relationship with municipal plusvalía and capital gains tax (IRPF)

IBI does not replace municipal capital gains tax (IIVTNU) or capital gains tax under personal income tax (IRPF). These are separate taxes with their own liable parties and deadlines. Listing all three on a single breakdown of costs avoids surprises when calculating net sale proceeds.

For other selling costs, consult the guide on how much it costs to sell a property in Spain. Regarding state taxation on the sale, see IRPF on the sale of a property.

What to check before signing the deposit agreement

1. The exact wording of the IBI pro rata split (and other utility bills if the same criterion applies).
2. A copy of the latest receipt or a certificate proving payments are up to date.
3. Who notifies the change of ownership to the cadastre or town hall, if applicable in your municipality.
4. What happens if the sale is delayed to another quarter of the same year.

Outstanding IBI debts

If there are unpaid bills, the buyer can request a debt certificate or require payment prior to signing the title deeds. Tax regulations provide for statutory charge mechanisms in specific scenarios that you should verify with an administrative agency (gestoría). Do not sign assuming that "old IBI does not matter" without checking for encumbrances.

IBI in tenancy agreements terminated due to a sale

If you sell a tenanted property, the pro rata split of IBI does not replace the terms of the tenancy agreement regarding who paid the tax during the lease. The sale may involve subrogation of the tenant or termination in accordance with the Urban Tenancies Act (LAU) and agreement. Keep local tax (IBI) separate from the tenant relationship.

Foreign or non-resident buyer

The pro rata mechanism is identical, but it is advisable to specify clearly in terms of currencies and payment methods how the bill is compensated if one party is abroad. The notary and gestoría usually request proof of up-to-date payment on the day costs are settled.

Next steps

Agreeing the pro rata split in writing avoids back-and-forth emails after key handover. If you are selling, prepare receipts and certificates alongside the rest of your documentation.

At Sky Real Estate, we help align timelines and documentation during the sale process. Our property sales and promotion service.

Information provided for guidance only. Please consult the TRLRHL, local municipal ordinances, and the specific terms of your agreement.