Self assessment tax return accountant in Harrow

You're legally required to file an SA100 if you're self-employed earning over £1,000, a company director with untaxed income, a landlord earning rental income, a higher-rate taxpayer claiming pension relief, earn over £150,000 (from April 2024), receive Child Benefit while earning over £60,000, have capital gains over £3,000, or have foreign income. If you're unsure, send us a quick message: we'll tell you in plain English whether you need to file.

We collect your figures via our secure portal (no spreadsheet wrestling), prepare your full SA100 including all supplementary pages - SA103 self-employment, SA105 property, SA106 foreign, SA108 capital gains, SA109 non-residence - and submit to HMRC electronically. You get a one-page summary showing income, allowances, reliefs claimed, tax due, payment dates and your unique tax reference (UTR) login details.

31 October - paper returns. 31 January - online returns and balancing payment. 31 July - second payment on account. Miss 31 January by one day and HMRC charges £100. Three months late adds £10 a day. Six months late adds 5% of the tax due. We start contacting clients in October so nothing slips.