Free Irish Tax Return Calculators

How much Income Tax will I pay in Ireland this year?

The Income Tax Return due on 31st October 2026 or 18th November 2026 for online filing covers self-assessed income earned in 2025.

For most people it comes down to two rates: 20% on the first slice of your income, and 40% on everything above it. For 2025, that slice (the standard rate cut-off point) is €44,000 for a single person, €48,000 if you qualify for the Single Person Child Carer Credit, and up to €53,000 for a married couple or civil partnership (higher again with a second income).

Rates aren’t the whole story, though. Tax credits come off your bill directly: a single PAYE worker gets a Personal Tax Credit and an Employee Tax Credit worth €2,000 each, which is why most people pay far less than the headline rate suggests. On top of Income Tax, the Universal Social Charge (0.5% to 8%, depending on what you earn) and PRSI (around 4%) are calculated separately and added to your total deductions.

The calculators below use these figures to give you a quick estimate. If your situation includes rental income, self-employment, or anything outside standard PAYE, pick the specific calculator for that below or talk to us about getting it filed properly.

Income earned by self-employed, sole traders, PAYE with extra income, or rental income is subject to Irish Income Tax, PRSI and USC. Use our handy calculator to get an initial estimate based on your business income and expenses, before selecting the right FastTax.ie plan to complete your Form 11.

This handy tool is designed for landlords to calculate net rental profit and estimated tax owed (Income Tax, PRSI, USC). You can input income and expenses to see your likely liability. If you receive rental income over €5,000 net or €30,000 gross you’ll need to complete a Form 11 – that’s where FastTax.ie assists a growing number of landlords every year.

This calculator helps estimate CGT on the sale of property, shares, or other chargeable assets. It takes into account purchase costs, sales costs, and the annual personal exemption and estimates your tax owed at the 33% tax rate. This calculator is useful for anyone planning a disposal during the year, and also lists the deadlines which are important to be aware of if considering a sale of assets.

At FastTax.ie, we’re all about smarter tax filing. One of the smartest ways to reduce your tax liability is through voluntary pension contributions. The amount allowed depends on age, income and contribution type. Our handy calculator helps your to estimate the right amount for your circumstances, helping you to plan personal top-ups and employer contributions.

The criteria used to determine an individual’s liability to Irish tax are his residence, ordinary residence and domicile status.