Hi,
The personal alllowance for the year is 12570(1257L) tax free, the next 1- 37700(does not included scotland) will be liable to tax at 20%(BR).
This would mean any income over 50270 would then be liable at 40%(does not included scotland) , based on the figures you have advised your combined income at
both sources will be 66450 so this would mean your earnings at your second job(15k) would be liable at 40%.
The tax code that should be in place at this source would be D0, once your new employment starts you should contact the helpline to advise of your income so we can make sure that the correct code is operated.
Income Tax: general enquiries
Thank you.