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Tool
Recomputes Income Tax due for the year from bands and credits, compares it with the tax deducted through payroll, and calculates USC separately. It never simply adds up credit face values.
Last reviewed 2026-10-28 (awaiting sign-off by a named tax-qualified reviewer). Every factual tax rule on this page is backed by a dated Revenue source. Spotted an error? Use the contact page.
You will need: Year, taxable income, tax paid, filing status, extra credits and reliefs.
Do not enter your PPSN, bank details or passwords anywhere on this site. The tools do not need them.
Result says check with Revenue, or your year is complicated? Ask an accountant (no obligation).