Home/Uk/Marriage Allowance4 Year Backdated Calculator
ITA 2007 s55B Tax Transfer

UK Marriage Allowance Backdated Calculator

Calculate your annual £252 tax reduction and claim up to £1,008 in backdated 4-year tax refunds.

Couple Income Details
Must be below £12,570 (Personal Allowance).
Must be basic rate taxpayer (£12,571 to £50,270).

Marriage Allowance Refund Estimator

Enter couple income figures to calculate your 4-year backdated tax refund check.

Frequently Asked Questions (FAQ)

Claims can be backdated up to 4 tax years, delivering an immediate tax refund check of up to £1,008 (£252 per tax year).

You qualify if you are married or in a civil partnership, one partner earns below £12,570, and the other partner pays basic rate income tax (earning between £12,571 and £50,270).