About
Learn how the money side works.
Irish Fintax is a learning platform for Irish tax and personal finance: plain-English explanations and calculators you can run yourself.
Why it exists
Tax shouldn’t need a translator.
Most people meet tax and money questions at the worst moment: a first payslip, selling shares, buying a home, starting a company. The rules are public, but they are written for specialists.
This site puts them in plain English and lets you try your own numbers, so you understand what is going on before you decide anything.
It is general information, not advice. Rates and rules change and your own situation matters, so check with Revenue or a qualified, regulated adviser before acting on a big decision.
Tax Calculators
Calculators for income tax, VAT, corporation tax, the R&D credit, capital allowances, CGT and CAT, using Irish rates.
Personal Finance
Work out a mortgage, and compare investment options side by side on risk, tax and access to your money.
Accounting Hub
Memos, templates, tax and VAT forms and setup guides for starting and running a company.
Ask a question
Stuck on something the tools don’t cover? Ask it in your own words and get a plain-English answer by email.
How we check our figures
Every figure comes from the source.
A calculator is only as good as its numbers, so this is how they are kept right.
Official sources only
Rates, bands and rules come from Revenue, gov.ie, the Department of Finance and the Acts themselves. News sites and summaries are only used to spot that something changed, never as the source of a figure.
Re-checked when the rules change
Every calculator is re-checked after each Budget and Finance Act, and mortgage rates are checked regularly against each lender's own rate page.
Dated and linked
Each calculator shows the date its figures were last checked and links to the official page they came from, so you can check them yourself.
Tell us if something looks wrong
If a figure does not match what you see from Revenue or your lender, ask us. We check it against the source and correct it.
Last full check of every calculator: October 2026.
There’s no such thing as a basic question
Still making sense of it? Let’s start with your question.
Ask about tax or money in your own words.