UK Marriage Allowance Calculator
Transfer up to 10% of Personal Allowance (£1,260) to your basic-rate spouse → max benefit £252/yr.
- Eligible?
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- Transfer amount
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- Annual benefit
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About this tool
UK Marriage Allowance Calculator is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.
Category: Tax & Government — UK. Browse more Tax & Government — UK tools.