Self Assessment Returns
Full preparation and submission of your SA100 well before the January deadline, ensuring every allowable business expense is correctly claimed.
Self-Employed Professionals
Sole Trader Accountants & Tax Specialists
Expert Accounting Support for Sole Traders
As a sole trader, you are personally responsible for filing your self-assessment tax return and paying income tax and National Insurance on your profits. Unlike a limited company, there is no legal separation between you and your businessâ€â€meaning any HMRC errors fall entirely on your shoulders.
We ensure your return is mathematically flawless, submitted well before the deadline, and structured to avoid unnecessary tax exposure while legally claiming every legitimate business expense.
Clear explanations: We provide straightforward advice so you actually understand your tax positionâ€â€ensuring you know exactly what you owe, what your 'Payments on Account' are, and why.
Legislative Warning
Making Tax Digital (MTD) for ITSA
The days of submitting an annual shoebox of receipts are over. From 6 April 2026, sole traders explicitly face a mandatory HMRC transition that fundamentally changes how you report your income.
The traditional single January 31st deadline is being replaced by a rigid quarterly reporting mechanism. If your gross turnover exceeds £50,000, you legally must use HMRC-recognised software. We implement and manage these platforms (like Xero) to ensure your transition is seamless and penalty-free.
- Cloud accounting migration (Xero, FreeAgent).
- Automated quarterly digital submissions.
The April 2026 Mandate
£50k+
Gross Income threshold triggering automatic MTD registration.
4x Quarterly Filings
Replacing the single annual return with four mandatory software-driven updates to HMRC, plus a final end-of-year declaration.
Are you prepared for the deadline? Let us handle the technical software migration.
What We Handle for Sole Traders
Tax & NIC Calculation
Clear, advanced breakdown of your Income Tax alongside your Class 2 and Class 4 National Insurance liabilities.
Payments on Account
Advance tax bill forecasting to prevent the infamous January and July "Payments on Account" cashflow shocks.
VAT Registration
If your turnover approaches the £90,000 threshold, we manage your VAT registration and quarterly returns.
Incorporation Strategy
We perform a tax-efficiency audit to determine the exact tipping point where transitioning to a Limited Company will save you money.
Cloud Bookkeeping
Implementation of digital bookkeeping software to automate receipt capture and simplify year-end reporting.
Key Self Assessment Deadlines
Critical
31 January
Online Return Submission
31 January
Payment of Income Tax Due
Advance
31 July
Second Payment on Account
Late submission or late payment results in automatic HMRC penalties. We monitor your deadlines to ensure total compliance.
Self Assessment FAQs
When is the self-assessment deadline?
Currently, online self-assessment tax returns must be submitted by 31 January following the end of the tax year. However, if your gross turnover is over £50,000, you must prepare for the new MTD quarterly digital submission deadlines starting in April 2026.
Do sole traders pay National Insurance?
Yes. Sole traders typically pay Class 2 and Class 4 National Insurance contributions alongside their income tax. We calculate this exact figure so you know your total liability well in advance.
What are 'Payments on Account'?
If your self-assessment tax bill is over £1,000, HMRC requires you to make 'Payments on Account'. These are advance payments towards your next tax bill, due in January and July each year. We forecast these for you so they never cause a cash flow crisis.
Ready for Your First Year of Clarity?
Speak directly with an accountant about structuring your self-assessment, handling the MTD transition, and planning for incorporation.
Book Your Strategy Session