Skip to main content GOV.UK uses cookies to make the site simpler. Find out more about cookies GOV.UK Search Search ____________________ Search 1. Home 2. Money and tax 3. Income Tax Marriage Allowance Contents 1. How it works 2. How to apply 3. If your circumstances change How to apply You can apply for Marriage Allowance online. The person with the lowest income should make the claim. If your application is successful, changes to your Personal Allowances will be backdated to the start of the tax year (6 April). How your Personal Allowances change HM Revenue and Customs (HMRC) will give your partner their extra allowance either: * by changing their tax code - this can take up to 2 months * when they send their Self Assessment tax return Your tax code will also change if you’re employed or get a pension. Your new code will reflect your new Personal Allowance and will end with ‘N’. If your new Personal Allowance is lower than your income after you’ve made a claim, you might have to pay some income tax. However, you might still benefit a couple. When Marriage Allowance stops Your Personal Allowance will transfer automatically to your partner every year until one of you cancels Marriage Allowance or your circumstances change, for example because of divorce or death. * Previous : How it works * Next : If your circumstances change Print entire guide Related content * Income Tax rates and Personal Allowances * Married Couple's Allowance Explore the topic * Income Tax Is this page useful? Maybe Yes this page is useful No this page is not useful Is there anything wrong with this page? Thank you for your feedback Close Help us improve GOV.UK Don’t include personal or financial information like your National Insurance number or credit card details. What were you doing? ____________________ What went wrong? ____________________ (BUTTON) Send Close Help us improve GOV.UK To help us improve GOV.UK, we’d like to know more about your visit today. We’ll send you a link to a feedback form. It will take only 2 minutes to fill in. Don’t worry we won’t send you spam or share your email address with anyone. Email address ____________________ (BUTTON) Send me the survey Don’t have an email address? Prepare for EU Exit * Prepare your business for the UK leaving the EU * Prepare for EU Exit if you live in the UK * Living in Europe after the UK leaves the EU * Continue to live in the UK after it leaves the EU Services and information * Benefits * Births, deaths, marriages and care * Business and self-employed * Childcare and parenting * Citizenship and living in the UK * Crime, justice and the law * Disabled people * Driving and transport * Education and learning * Employing people * Environment and countryside * Housing and local services * Money and tax * Passports, travel and living abroad * Visas and immigration * Working, jobs and pensions Departments and policy * How government works * Departments * Worldwide * Publications * Announcements __________________________________________________________________ Support links * Help * Cookies * Contact * Terms and conditions * Rhestr o Wasanaethau Cymraeg * Built by the Government Digital Service Open Government Licence All content is available under the Open Government Licence v3.0, except where otherwise stated © Crown copyright