Rates & sources
UK tax rates and thresholds, as published by HMRC. Scotland and Wales have devolved rates for income tax and property transactions.
Source: HMRC — Tax rates — figures refreshed at the start of each tax year.
When to use this calculator
- Before accepting a pay change, bonus, pension contribution, or salary-sacrifice option.
- When you want to compare employed, self-employed, or dividend-based income scenarios.
- When you need a simple take-home estimate before running payroll or filing returns.
- When you are approaching the £100,000 income level and want to understand the personal allowance taper effect.
- When you are planning a salary sacrifice arrangement and need to see the net pay impact before agreeing terms.
A realistic Ireland planning example
Use these sample inputs as a quick scenario test, then change one variable at a time to compare outcomes.
Annual Rent Paid (€)
€1,400
Tenancy Type
Private rental (RTB-registered)
Filing Status
Single (max credit €750)
Tax Year
2024
After entering these figures, review rent tax credit, annual tax saving and monthly saving together rather than in isolation — each metric tells a different part of the story. Then rerun the tool with one input adjusted to see which variable has the biggest effect on all three outputs before you settle on a plan.
How to read your results
Rent Tax Credit
Review this figure alongside your gross income so you can understand the true cost of deductions and plan around any thresholds before the tax year closes. If the figure looks higher than expected, check whether any pension or gift-aid contributions could reduce your taxable income.
Annual Tax Saving
Review this figure alongside your gross income so you can understand the true cost of deductions and plan around any thresholds before the tax year closes. If the figure looks higher than expected, check whether any pension or gift-aid contributions could reduce your taxable income.
Monthly Saving
Use this metric to compare scenarios side by side and understand how changes in the key inputs drive the final outcome. If the figure surprises you, isolate one variable at a time and rerun the calculation to identify which assumption is responsible.
Maximum Available Credit
Use this metric to compare scenarios side by side and understand how changes in the key inputs drive the final outcome. If the figure surprises you, isolate one variable at a time and rerun the calculation to identify which assumption is responsible.
Rent Needed for Full Credit
Use this metric to compare scenarios side by side and understand how changes in the key inputs drive the final outcome. If the figure surprises you, isolate one variable at a time and rerun the calculation to identify which assumption is responsible.
Method & assumptionsAuthoritative sources
This calculator applies the Irish Rent Tax Credit rules as introduced in Finance Act 2022 and updated for 2024. The credit equals 20% of qualifying rent paid, subject to a cap of €750 for single or widowed taxpayers and €1,500 for jointly assessed couples. Qualifying tenancies include RTB-registered private rentals, Rent-a-Room licence agreements, and approved student accommodation. The credit is non-refundable — it can reduce your income tax liability to zero but cannot create a repayable surplus in isolation. Retrospective claims for 2022 and 2023 remain open via the myAccount portal on Revenue.ie.
The calculator uses the 2024 rates and caps. Rates were different in prior years: the credit was first introduced at 20% for 2022, so the same formula applies historically. Jointly assessed couples should note that the €1,500 is a combined household limit, not a per-person limit. The tenancy type field captures eligibility context; however, the credit rate itself does not vary by tenancy type — all eligible types attract the same 20% rate up to the relevant cap. Always confirm your specific situation with Revenue or a qualified tax adviser before filing.
Common mistakes
- !Entering gross income when you really want take-home pay, or vice versa.
- !Ignoring pension contributions, deductions, or local tax rules that change the result.
- !Comparing monthly and annual figures without standardising them first.
- !Overlooking the National Insurance threshold changes that apply mid-year when rates or bands are adjusted in a Budget.
- !Assuming a salary sacrifice benefit reduces take-home pay by the full gross amount, rather than only the after-tax cost.
What to do next
- Check the same scenario with related pay or deduction calculators to see the full picture.
- Keep a copy of the assumptions you used so you can compare next tax year or pay period accurately.
- Read the related guides below if you are choosing between multiple income or deduction options.
- If you are self-employed, run the self-employment tax calculator alongside this result to compare the net position against employed income.
- Check whether increasing your pension contribution by even one or two percent changes the take-home significantly — use the pension calculator next.
Frequently asked
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End-of-article next steps
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