The pension lifetime allowance is the maximum amount of money that an individual can have in their pension savings and receive tax relief on. In the United Kingdom, the pension lifetime allowance is set by the government and is subject to change from year to year.

The pension lifetime allowance applies to all types of pension schemes, including defined benefit and defined contribution schemes. It is calculated by adding up the value of an individual's pension savings (including any benefits that have already been taken), and it is expressed as a monetary value.

If an individual's pension savings exceed the pension lifetime allowance, they may be subject to a tax charge. The tax charge is based on the excess savings and is calculated at the individual's marginal tax rate.

It is important to be aware of the pension lifetime allowance, as it can affect an individual's ability to save for their retirement and their tax liability. If you have any questions about the pension lifetime allowance or need help with your pension planning, you can contact HM Revenue and Customs (HMRC) or a financial advisor for assistance. It is also a good idea to keep track of the value of your pension savings and to consider whether you are likely to exceed the pension lifetime allowance in order to avoid any surprise tax charges.