Your couple setup
What this means
The headline saving is only fully available when the lower earner has enough unused allowance to transfer and the recipient partner remains within the basic-rate range.
Use this to see whether a couple is likely to qualify for Marriage Allowance in 2026/27, how much of the headline saving may actually be kept, and when the older Married Couple's Allowance route matters instead.
The headline saving is only fully available when the lower earner has enough unused allowance to transfer and the recipient partner remains within the basic-rate range.
Marriage Allowance works when one spouse or civil partner has unused Personal Allowance and the other is not a higher-rate taxpayer for the purpose of the scheme. The transfer is fixed, so the headline saving can be reduced if the lower earner has to pay tax on some of the allowance they transferred away.
This page uses the standard 2026/27 Personal Allowance and the usual maximum Marriage Allowance saving of £252. It is intentionally a plain-English checker, not a full tax-return engine.