Working Tax Credit (WTC) is paid to those who work (employee or self-employed) but are on a low income It is gradually being replaced, along with other benefits and tax credits, by Universal Credit. How much WTC you are entitled to depends on your circumstances – such as your hours of work, the elements you qualify for and your household income.
Generally tax credits are based on your household income for the previous tax year, unless you expect to earn £25,000 more than last year or you expect to earn less. You can get an indication of the amount you may be entitled to by using HM Revenue and Customs' online tax credit calculator. Visit the GOV.UK website for more information about Working Tax Credit (WTC).