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Rent Receipt Calculator

Issued the rent receipt and wondering how much is really yours? The rent reaches you in full, but you pay IRS on it later. This calculator spreads the Category F tax and the deductible expenses across the months to show what is left, on average, from each receipt and how much to set aside for the taxman.

The rent reaches you in full (a rent receipt withholds no IRS); the tax is paid later, on the annual return. Here we spread the deductible expenses and the Category F IRS across the months to show what is left, on average, from each receipt. The autonomous rate depends on the purpose and length of the contract: 28% for non-residential and, for housing, from 25% down to 5% by term.

Kept per month (average)
€525.00
IRS to set aside per month
€175.00

From each receipt, what you keep

Monthly rent (gross)€800.00
− Deductible expenses (÷ 12)€100.00
− IRS (25%)€175.00
Kept per month (65.63% of the rent)€525.00

Per year: you receive €9,600.00, set aside €2,100.00 for IRS and keep €6,300.00. Rent receipts withhold no IRS: you pay it later on the annual return (Anexo F).

Educational estimate, not tax or financial advice. It spreads the annual autonomous taxation of rents (Category F) in mainland Portugal across the months. It does not cover the aggregation option, withholding at source (only when the tenant has organised accounting), the moderate-rent regime (10%) still pending regulation, or non-residents.

The receipt is gross: the IRS comes later

When you receive a rent and issue the electronic rent receipt, the money lands in full: unlike a salary, a private landlord’s rent has no withholding at source (there is withholding only when the tenant is a business with organised accounting). The IRS on rents is assessed and paid later, on the annual return (Anexo F). So part of each receipt is not really yours: it pays to set it aside. This calculator shows that monthly amount to set aside and what is left net.

What is left from each rent

The tax is not charged on the gross rent but on the year’s net income: the rents received minus the expenses you can deduct (IMI and AIMI, condominium fees, conservation and maintenance works with invoices, insurance). Mortgage interest, furniture and works that raise the property’s value are not deductible. Enter the monthly rent on the receipt and the yearly total of expenses: the calculator spreads both over 12 months and applies your contract’s rate to reach the average monthly net.

The rate depends on the type and length of the contract

Rents have a special (autonomous) rate, not the rates on employment income. For residential lettings, the longer the contract, the lower the rate: 25% up to 5 years, 15% from 5 to 10 years, 10% from 10 to 20 years and 5% from 20 years. For non-residential lettings (shops, offices, garages) the rate is 28%. Pick your case in the selector: longer contracts leave more in hand.

Worked example

You let a flat for €800 a month on a 3-year residential contract (25% rate) with €1,200 of deductible expenses for the year. Over the year you receive €9,600, pay €2,100 of IRS (on €8,400 of net income) and keep €6,300. Spread over the months: from each €800 receipt you should set aside about €175 for IRS and keep, on average, €525 net (about 65.6% of the rent). On a contract of 20 years or more (5%), you would set aside just €35/month and keep €665.

Frequently asked questions

How much do you keep from each rent receipt?
From the gross rent you must subtract the deductible expenses and the Category F IRS. On a short residential contract (25%) with few expenses you typically keep 65% to 75% of the rent; the longer the contract, the lower the rate and the more you keep. Use the calculator for your case.
Does a rent receipt withhold IRS?
Usually no. A private landlord’s rent paid by a private tenant arrives in full, with no withholding at source. The IRS is paid later, on the annual return (Anexo F). There is withholding (25%) only when the tenant is a business with organised accounting letting for its activity.
Must I issue an electronic rent receipt?
As a rule yes: landlords with property income (Category F) issue the electronic rent receipt on the Portal das Finanças for each rent received. Exempt are, among others, landlords aged 65 or over on 31 December of the previous year and those with low rents (up to twice the IAS in the prior year) with no obligation to hold an electronic mailbox.
What if I am exempt from issuing the electronic receipt?
Exempt landlords must submit the annual rents declaration (Modelo 44) by the end of February, listing the rents received in the previous year. The duty to report the rents on the IRS return (Anexo F) stands either way.
Which expenses can I deduct from rent?
The expenses incurred to obtain the rent: IMI and AIMI, condominium fees, conservation and maintenance works (with invoices) and insurance. Mortgage interest, furniture and works that raise the property’s value are not deductible.
Does the receipt amount include the IRS?
No. The rent receipt records the gross amount received from the tenant, with no tax. The IRS is computed and paid separately, on the annual return. That is why it is wise to set aside each month the slice of tax this calculator shows.

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Author: Thorben Rasmus Idel · Reviewed by: Nahar Geva · Last reviewed: 2026-06-08