What is Married Couple's Allowance for couples born before 1935?

Full answer

Married Couple's Allowance (MCA) is distinct from the ordinary Marriage Allowance and applies only where at least one partner in a marriage or civil partnership was born before 6 April 1935. Because everyone eligible is now well into later life, it is a niche but valuable relief. Rather than transferring part of the Personal Allowance, MCA works as a tax reducer: HMRC takes 10% of a set MCA amount and deducts it directly from your Income Tax bill. The specific minimum and maximum MCA amounts, and the income level at which the allowance starts to be tapered, are set by the government and are not included in this rate card, so confirm the current figures on gov.uk before relying on them. The mechanism is what matters: you calculate your tax as normal using the standard bands - Personal Allowance GBP 12,570, basic rate 20%, higher rate 40% - and then subtract the MCA tax reduction at the end. Who it affects: only couples with a pre-1935 birth, which now means surviving spouses and very long marriages. The allowance can be reduced (tapered) once the higher earner's income exceeds a set limit, but it never falls below a guaranteed minimum. Couples can also choose how to allocate the allowance between them, and any unused amount can sometimes be transferred to the other spouse. Because MCA is a tax reduction rather than extra allowance, you must have a tax bill for it to set against - if your income is below the Personal Allowance and you pay no tax, there may be nothing to reduce. A couple cannot claim both MCA and the ordinary Marriage Allowance in the same year; you take whichever is more beneficial. Use an income-tax calculator to work out your underlying tax bill first, then apply the MCA reduction, and contact HMRC to claim or to change how the allowance is split.

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