There are two payment rates set by the DWP: standard and higher DEA rates.
The higher rate is often set if you’ve been found guilty of an offence.
How much you pay depends on how much you earn, with higher earners paying a larger percentage. The maximum that can usually be taken is 40% of take home pay. That is your salary after tax, National Insurance and your workplace pension have been deducted.
For more information about how DEA is calculated, visit Gov.UK