Paying Back Some Child Benefit

grey_gym_sock

you need to add in all taxable benefits when calculating adjusted income.

but basically, if you have £6k more income, chuck another £6k into pensions. with 40% income tax saving + something like 17% child benefit saving, you are only giving up £43 of after-tax income for every £100 that ends up in your pension pot.

Darksparkle

Just a word of warning, if you don't register in time or make a return on time you could be liable to a penalty.

You should have registered by 5th October however if you pay any additional tax due by 31st January then you should be okay.

https://www.gov.uk/register-for-self-assessment/overview