Late tax return accountants for UK taxpayers
We prepare overdue Self Assessment returns and help establish the next step for late company filings. Get a fixed written quote within 48 hours; filing time depends on your records and authorisation.
Your fixed quote
Tell us your situation and we come back within 48 hours with a fixed written quote. No obligation.
Late Tax Return Filing: What You Need to Know
Before comparing quotes, use our late tax return accountant fee checklist to check years, records work, VAT and additional charges.
We prepare overdue Self Assessment returns, including where you cannot yet afford the tax, and help establish the next step for late company filings. Get a fixed written quote within 48 hours; filing time depends on your records and authorisation.
Start with the relevant guide or use the free estimate or deadline tool. If you need help applying that information to your records, request a quote and include any urgent notice date.
Before acting as your agent, we agree the engagement and the HMRC authorisation needed. Keep responsibility for urgent deadlines in view while that process is completed.
For a sole trader, the working records usually include sales, business expenses, bank statements and tax already deducted. For someone with employment or rental income, P60s, pension contributions, rental statements and relevant expenses may also matter. We identify the records needed for your actual income sources before preparing the return.
Late company returns and accounts
Tell us the company number, accounting periods, which accounts or CT600s remain outstanding, and whether a strike-off notice exists. We scope company accounts, CT600 preparation and any separate payment or appeal work in the written quote.
Companies House filing, CT600 filing and Corporation Tax payment have different deadlines. Start with the company interest and penalty calculator and company filing guide. If strike-off action has started, include the notice date in your enquiry.
Benefits of Late Tax Return Filing
A defined scope
The quote identifies the years, returns or notices covered and what information is still needed.
Records behind the figures
We distinguish confirmed information from assumptions, estimates and missing evidence.
Separate filing and payment decisions
Submitting a return does not pay the tax or cancel existing penalties. Each issue needs its own next step.
What the filing quote should cover
Confirm whether the quote covers one return or several years, record reconstruction, the required supplementary pages and any later amendment. Company accounts and CT600 work should be identified separately.
If an appeal deadline or a penalty threshold is close, include the actual date when you enquire. We confirm a realistic filing timetable after reviewing the records; a quote within 48 hours is not a promise to file within 48 hours.
Is Late Tax Return Filing Right for Your Situation?
This service may help if you have:
- A Self Assessment return requested by HMRC but still unfiled
- Employment, self-employment or rental income that needs reconciling
- Missing receipts or records requiring a documented reconstruction
An initial consultation is always the right starting point. We review your HMRC records, assess your penalty position, and give you a clear recommendation based on your specific circumstances.
How the Process Works
Check the notice to file and actual deadline
Confirm whether HMRC issued a notice to file, its deadline and the appropriate submission route for the year.
Gather income, expenses and payments
Gather income records, expenses, reliefs and tax already deducted. Identify missing evidence and any appropriate provisional figures.
Approve and submit the return
Explain the calculation and obtain your approval before submitting the return as an authorised agent.
Review separate penalty and payment issues
Retain submission evidence. Assess penalty notices and payment options separately; neither is resolved automatically by filing.
Late Tax Return Filing Pricing Guide
Fees depend on the complexity of your situation. We provide a fixed written quote within 48 hours of your enquiry so you know exactly what you will pay before committing.
Every Day Costs You More
HMRC penalties start at £100 and increase by £10 per day after 3 months. The longer you wait, the more you pay. Tell us what is outstanding and get a fixed written quote today.
What We Handle for You
- Return preparation, HMRC submission, basic penalty advice
- Penalty review, excuse preparation, HMRC correspondence, follow-up
- All years preparation, coordinated submissions, penalty minimisation strategy
- Evidence gathering, claim preparation, HMRC submission, response handling
- Financial analysis, HMRC negotiation, payment plan setup, ongoing support
- Historic analysis, interest calculation, penalty computation, summary report
Late Tax Return Filing FAQs
Common Situations We Resolve
One or two years overdue
Self-employed income, rental property, or a one-off capital gain that should have been reported. We file the outstanding returns, calculate the true liability, and apply any reliefs that reduce what is actually owed.
Penalty notice just arrived
The 30-day appeal window is running. We assess whether a reasonable excuse claim has genuine merit, prepare the appeal with supporting evidence, and present it in the format HMRC accepts.
Multiple years behind
Three, four, or more years of unfiled returns. We reconstruct records from bank statements and HMRC data, file everything in the right order, and negotiate penalty mitigation across the whole period.