Landlord Tax Return Ireland: Form 11 Step-by-Step

Who Needs to File a Form 11?

If you receive any rental income in Ireland, you must file a self-assessed Form 11 tax return with Revenue. This applies even if you're also a PAYE employee — your rental income isn't covered by your employer's payroll. The filing deadline for 2025 rental income is typically mid-November 2026 (extended from end-October for online filers through ROS).

What You Need Before You Start

• Total rental income received during the tax year
• All expense receipts organised by category (mortgage interest cert, insurance policy, management fees, repairs invoices, BER cert receipt, accountant invoice, letting agent fees, RTB registration receipt)
• Mortgage interest certificate from your lender (shows total interest paid during the year)
• Capital allowances schedule if you're claiming wear and tear on furniture/fittings
• Property details — address, RTB registration number, dates of tenancy

The Rental Income Section: Step by Step

Step 1: Enter Gross Rental Income

Total rent received during the tax year. If your property was vacant for part of the year, only include rent actually received. Don't include any deposits unless they were retained as rent.

Step 2: Enter Allowable Expenses

The Form 11 breaks expenses into categories. Enter each line item from your records. See our complete deductions checklist for every qualifying expense.

Key line items in the rental section:

• Mortgage/loan interest: The interest-only portion (not capital repayments). Your lender's annual statement shows this figure.
• Repairs and maintenance: Total of all repair invoices during the year.
• Insurance: Landlord insurance premium for the tax year.
• Management fees: Letting agent and/or apartment management company fees.
• Other expenses: Accountant, advertising, BER, RTB, LPT, legal fees.
• Capital allowances: 12.5% of qualifying furniture/fittings per year (wear and tear).

Step 3: Calculate Net Rental Income

Gross income minus total allowable expenses = your taxable rental income. This figure is then taxed at your marginal rate (typically 40% income tax + 4% PRSI + USC for higher earners).

Step 4: Pay Preliminary Tax

You must pay preliminary tax for the current year at the same time as filing the prior year return. This is 100% of the prior year's tax liability (or 90% of the current year's estimated liability).

Common Mistakes to Avoid

• Forgetting to claim mortgage interest: This is often the largest deduction and is worth thousands per year
• Confusing repairs (deductible) with improvements (not deductible): Replacing a broken boiler = repair. Installing a brand new extension = capital improvement.
• Not claiming wear and tear: If you furnished the property, claim 12.5% annually
• Missing pre-letting expenses: If the property was vacant for 12+ months before first letting, you can claim up to €5,000. See our pre-letting expenses guide
• Forgetting the BER: The BER assessment fee is deductible. Book at Homerating.ie and claim the cost