The tax system is self assessment and this is how works :
Self Assessment means that each year accounts are produced, these are then entered on your tax return to 5 April and the amount of tax and national insurance is worked out.This tax return then has to be filed with HMRC, if you complete it electronically the deadline for this is 31st of January in the following year.
You do have to remember that at no stage has HMRC checked any of the information on your tax return or accounts.
HMRC can conduct tax enquiries and these can be at random at this stage they will ask to see all the books and records, receipts and bank statements used in the business. It’s only then you would find out is nay expenses and not tax deductible. This would mean paying tax back along with interest and penalties.
We work with our clients to ensure we claim the maximum amount of eligible tax deductible expenses whilst still legitimately minimising your tax bill