Straight answers, a fixed fee and every HMRC and Companies House deadline handled for you. DKAT looks after sole traders, partnerships and limited companies across London.
DKAT Accountants is a London accountancy firm for small businesses. Our FCCA-qualified accountants handle bookkeeping, VAT returns, payroll, annual accounts, corporation tax, Self Assessment and Making Tax Digital for a fixed fee agreed before work starts. We work with sole traders, partnerships and limited companies across London, and the first consultation is free.
If you run the business and also do the paperwork, you are who we built this service for.
A good small business accountant does more than file once a year. These are the six jobs we take off your desk.
We track all of these for you. Dates below apply to a standard small company or sole trader.
| Filing or payment | Deadline |
|---|---|
| Register for Self Assessment (sole traders) | 5 October after the tax year ends |
| Self Assessment return and tax payment | 31 January after the tax year ends |
| Annual accounts to Companies House | 9 months after your year end |
| Corporation tax payment | 9 months and 1 day after your year end |
| Company Tax Return (CT600) | 12 months after your year end |
| Confirmation statement | At least every 12 months |
| VAT return and payment | 1 month and 7 days after the VAT period ends |
| PAYE and National Insurance (paid electronically) | 22nd of the following tax month |
Two situations we see often among London small businesses. Names are illustrative and figures use 2026/27 rules.
Between £50,000 and £250,000 of profit, each extra pound of profit is taxed at an effective 26.5%. Marcus’s £10,000 contribution therefore saves £2,650, a quarter of its cost. The payment must be wholly and exclusively for the business, sit within the £60,000 annual allowance and be made before the year end. The money is locked in the pension until minimum pension age, so it suits cash he does not need soon.
Aisha never charged VAT on those sales, so HMRC treats her takings as VAT-inclusive and she pays the £4,000 from her own profit, before any penalty. Her accountant would have flagged the threshold months earlier, and she could have raised prices or registered on time.
We act for small businesses across Greater London. Your records, reports and filings live in cloud software, so you can reach us by phone, email or video wherever your business is. If you are a Vietnamese-speaking business owner, our Vietnamese-language service covers the same work.
Before you hire any accountant, check the firm’s qualifications and regulator. Our guide to choosing an accountant in London lists seven things to verify.
Send a few details and an FCCA accountant will reply within 12 hours with next steps and a fixed-fee quote. There is no obligation.
Prefer to talk? Call 07990 572720 between 9am and 6pm, Monday to Friday.