1375M is a common tax code for people who have taken advantage of the Marriage Allowance for the 2020/21 tax year.

What does it mean?

Nearly everyone is entitled to a tax-free personal allowance, which means that a certain amount of your earnings each year are paid to you without being taxed. For most people this amount is £12,500.

If your husband, wife or civil partner earns less than this, the Marriage Allowance allows them to transfer 10% of their allowance to you. This increases your tax-free earnings, meaning as a couple you don’t lose the benefit.

If your tax code is 1375M, it means that your partner has transferred £1,250 of their personal allowance to you, giving you a total tax-free allowance of £13,750.

It is given to you in equal portions throughout the year according to your payment frequency. For example, if you are paid weekly, your allowance is equivalent to £264 per week.

With this personal allowance, your earnings will be taxed as follows:

If you live in England, Wales or Northern Ireland

Any earnings over and above your personal allowance will be taxed as follows:

  • 20% on earnings up to £37,500
  • 40% on earnings between £37,501 and £150,000
  • 45% on earnings above £150,000

If you live in Scotland

Any earnings over and above your personal allowance will be taxed as follows:

  • 19% on earnings up to £2,085
  • 20% on earnings between £2,086 and £12,658
  • 21% on earnings between £12,659 and £30,930
  • 41% on earnings between £30,931 and £150,000
  • 46% on earnings above £150,000

1375M is a cumulative tax code, which means that if you return to work after a break or if you start working part-way through the tax year, your tax-free personal allowance will have been building up and you may pay less tax for a while.

 These figures are correct for the 2020/21 tax year.