I have sole trader client who also has small portfolio of rental properties and have prepared her tax reurn for a number of year. Client does her own bookkeeping on simple spreadsheets and provides us with the paperwork to check over and prepare her tax returns. This year her spreadsheets have no mortgage interest which is an fairly considerable amount. On questioning the missing figure she has informed me she doesnt want to claim tax relief on the mortgage interest this year and is happy to pay the higher amount of tax as she wants her rental profits on her tax return to be higher and is of the opinion that it is her decision to omit expenses from her rental accounts if she doesnt want to claim tax relief. I have explained that the rental acounts wont show a true and fair representation of her rental business without the mortgage interest and that it should be included however she wont provide the information but wants her tax return prepared now or she will go to an accountant who will prepare the accounts in the manner she wants as she believes i am incorrect in demanding the mortgage interest figures. Just wondering what other accountants would do in these circumstances. The person has been a good client in the past with little hassle and pays quickly so shame to lose her but I am not happy submitting the tax return without the mortgage interest.