Legacy benefits: what they were and what replaced them

Legacy benefits is the informal name for the six means-tested benefits Universal Credit was built to replace: Working Tax Credit, Child Tax Credit, Income Support, income-based Jobseeker's Allowance, income-related Employment and Support Allowance and Housing Benefit. Each had its own claim, its own rules and its own payment cycle, which is the problem Universal Credit was meant to solve by paying one amount once a month. Contribution-based JSA and ESA were not replaced. They still exist as New Style JSA and New Style ESA, they are not means-tested, and you can be paid one alongside Universal Credit.

A migration notice is the letter that moves you. It tells you that your legacy benefit is ending and gives you a deadline to make a Universal Credit claim. The deadline is normally at least three months after the letter, but it can be shorter where the benefit is being abolished (regulation 44(3E), from 29 January 2026). It is the part that catches people out: tax credits end the day before the deadline, and Housing Benefit, Income Support, income-based JSA and income-related ESA end at the end of the two weeks starting on the deadline day, whether or not you have claimed. Ignoring the letter does not keep the old payment running. Housing Benefit for supported or temporary accommodation is the exception and carries on. If you need longer, you can ask for an extension before the deadline passes, and it is usually granted where there is a good reason.

If your Universal Credit award would be lower than the legacy benefits it replaces, a transitional element can top it up to the same amount on the day you move. It only exists where you claimed in response to a migration notice. Claiming voluntarily, before a notice arrives, never brings it, which is why moving early to see what happens is an expensive experiment. The element then erodes: it falls as your other elements rise, so an uprating or a new child reduces the protection rather than adding to your award, and certain changes end it outright. The Universal Credit Transitional Protection Calculator shows the sum on your own figures.

Three things usually surprise people. Payments become monthly in arrears rather than weekly or fortnightly, so the first one arrives about five weeks after you claim. Rent that used to be paid straight to a landlord under Housing Benefit is normally paid to you instead, and you pay the landlord. And earnings are tapered at 55p in the pound above any work allowance rather than assessed against fixed hours rules, which is better for most people working short hours and worse for a few working long ones.

If no migration notice has arrived, you are choosing the date, and the choice is worth modelling first. Run the numbers on the calculator, compare them with what you receive now, and remember that a voluntary claim cannot be reversed: the legacy benefit ends the moment the Universal Credit claim is made. A free welfare rights service will do this calculation with you, and on a borderline case that advice is worth more than any online tool.