CIS Tax Returns · South West London
CIS tax returns in Merton
CIS for contractors and subcontractors in Merton, from an accountant that works to the 19th of every month. Verification of new subcontractors, the right deduction rate every time, monthly returns and statements, and for subcontractors the annual return that turns deductions into a refund. Online, fixed-fee, serving every postcode.
from £30/mo · fixed, per month
Next deadlines
- VAT return and payment for the quarter that ended last month
- CIS monthly return and deduction statements to subcontractors
- PAYE and National Insurance for last month paid to HMRC (electronic)
- VAT return and payment for the quarter that ended last month
Who this is for
CIS Tax Returns for Merton
Construction businesses in Merton on either side of the scheme: sole trader and limited company subcontractors with 20% or 30% deductions to reclaim, contractors who pay subcontractors and must file monthly, businesses that do both, and established subcontractors with turnover high enough to apply for gross payment status and stop deductions altogether.
What is included
Everything inside the fixed fee
- Subcontractor verification with HMRC and the correct deduction rate (20%, 30% or gross) applied each time
- Monthly CIS300 return filed by the 19th with deduction statements issued to every subcontractor
- Subcontractor annual Self Assessment with CIS deductions reclaimed and the refund chased with HMRC
- Gross payment status application prepared with the turnover, compliance and business tests evidenced
- Domestic reverse charge VAT checked on every CIS invoice in both directions
- CIS deductions offset against PAYE for limited company subcontractors through the EPS each month
How it works
CIS Tax Returns from Merton, step by step
Scope the job
We find out what you need filed, when it is due and what state the records are in, and tell you which fixed-fee package applies.
Agree the price
The fee is confirmed in writing. There is no hourly billing and nothing added for questions during the work.
Hand over the records
Photographs, PDFs, software access or a spreadsheet, sent however suits you. We confirm what we have and what is missing within two working days.
Approve, then we submit
You review the draft with our explanation, sign off, and we file. Receipts, copies and the next deadlines come back to you immediately.
Why IGI
What you get in Merton
No hourly rate and no surprise invoice. Merton clients know the fee for cis tax returns before they send a single document, and it stays fixed.
Deadline-first: the dates that matter for cis tax returns are shown at the top of this page, diarised for every Merton client and chased before they arrive.
We serve Merton remotely by design: records by WhatsApp or email, drafts back for approval, filing electronic. The saving on premises is passed to you in the fee for cis tax returns.
Continuity matters in cis tax returns: the person who prepared last year's work for your Merton business prepares this year's, and remembers what was agreed.
We explain cis tax returns in the words Merton business owners use, not in accountant's shorthand, and we show our working so you can check it.
You stay in control of cis tax returns: drafts go to Merton clients first, with the figures explained, and nothing leaves us until you say so.
Local facts
About Merton
Merton is in South West London, in the SW19 postcode district, England. For businesses in England the tax rules are those set by the UK Parliament: the 20/40/45% income tax bands, Class 4 National Insurance for the self-employed at 6% and 2%, Corporation Tax at 19% to 25%, and Stamp Duty Land Tax on property. Business rates are set locally by the council.
| Place | Distance | Direction |
|---|---|---|
| Abbey, Merton | 0.3 mi | NW |
| South Wimbledon | 0.4 mi | NW |
| Morden | 0.6 mi | SW |
| Merton Park | 0.6 mi | W |
| Colliers Wood | 0.7 mi | NE |
| Lavender Fields | 0.7 mi | E |
| Trinity, Merton | 0.8 mi | N |
| Ravensbury | 1 mi | S |
Worth knowing
Rules that come up in this work
Director's loan accounts
A director's loan account records money moving between a director and the company that is not salary or dividend. If the director owes the company money nine months and one day after the year end, the company pays section 455 tax at 35.75% of the balance, refundable only when the loan is repaid. Loans over £10,000 are also a benefit in kind unless interest is charged at HMRC's official rate.
Salary versus dividends
Directors of their own companies usually take a salary at or just above the National Insurance thresholds, which keeps the year qualifying for State Pension and is deductible for Corporation Tax, with further income as dividends. Dividends above the £500 allowance are taxed at 10.75%, 35.75% and 39.35% by band and can only be paid from distributable profits after tax, with a minute and voucher each time.
Corporation Tax rates and marginal relief
Corporation Tax is not a flat rate. Profits to £50,000 pay 19%, profits above £250,000 pay 25%, and the band between is taxed at an effective marginal rate of 26.5% through the marginal relief mechanism. Associated companies share the thresholds, which catches directors who own more than one company and is the most common cause of underpaid tax in owner-managed groups.
The VAT registration threshold
Watching the rolling twelve-month turnover figure is one of the quiet jobs of monthly bookkeeping, because the £90,000 VAT threshold arrives silently. Crossing it brings quarterly returns, Making Tax Digital software and a decision about schemes. Crossing it late brings a bill for VAT you could not recover from customers and a penalty for failing to notify.
Making Tax Digital for Income Tax
MTD for Income Tax replaces one annual return with quarterly digital updates and a year-end declaration, submitted from software. The threshold is gross trading and property income, measured two years earlier, and started at £50,000 in April 2026 before falling to £30,000 in April 2027. Anyone affected needs digital record keeping in place before their start date, not after.
Late filing penalties
Lateness is expensive in a way that compounds. For individuals, £100 immediately, then daily penalties, then percentage-based ones at six and twelve months, with interest running on unpaid tax throughout. For companies, Companies House penalties scale with delay and double on repeat, and HMRC adds its own for a late CT600. Filing on time is the cheapest tax planning there is.
Payments on account
If your Self Assessment bill exceeds £1,000 and less than 80% of your tax was collected at source, HMRC asks for two advance payments towards the following year, each half of the current bill, due 31 January and 31 July. The first year this happens the January payment is effectively one and a half times the bill. We model it in advance and show you how to reduce the payments if income is falling.
Questions
CIS Tax Returns questions from Merton
I have not filed for several years. Can you catch me up?
Yes. Late Self Assessment returns can be filed for the last four tax years to reclaim CIS deductions, and HMRC will offset refunds against any penalties. We quote a fixed fee for the set based on the number of years and reconcile each year's statements. The sooner this is done the more years remain claimable.
Can my CIS deductions be set against my VAT or other taxes?
For sole traders, no; CIS deductions are credited against your income tax and Class 4 National Insurance through Self Assessment, with the excess refunded. For companies, deductions are offset against PAYE and CIS owed, and the remaining balance is repaid by HMRC after the year end or, on request, set against Corporation Tax.
How much CIS refund can I expect?
It depends on your profit and expenses. Deductions are 20% of the labour element of your invoices; tax is only due on profit after expenses and the £12,570 personal allowance, with Class 4 National Insurance on top. Many subcontractors earning under £35,000 get back several thousand pounds. We give you the figure before filing.
What does the £149 subcontractor return include?
Your full Self Assessment with the self-employment pages, every CIS deduction statement reconciled to your income, allowable expenses claimed, the refund calculated and the return filed. We then track the repayment with HMRC, which usually arrives within two to six weeks of filing in the quieter months.
What rate do I deduct from a subcontractor?
You must verify each new subcontractor with HMRC before the first payment. HMRC tells you 20% if they are registered, 30% if not, or 0% if they hold gross payment status. Deductions apply to the labour element only, never to materials, VAT or plant hire. We verify every new subcontractor and record the result.
When are contractor returns due?
The CIS300 monthly return covers the tax month to the 5th and must reach HMRC by the 19th. Deduction statements must go to subcontractors by the same date. A nil return is still required if you paid no subcontractors. Late returns cost £100 immediately, rising to £200 after two months and then percentage-based penalties.
Is cis tax returns in Merton really the same price as elsewhere?
Yes. The fee published on this page is what a client in Merton pays and what a client in any other part of England pays. It is confirmed in writing before work starts and the invoice matches the quote. Where a higher package applies because your situation is more complex, we say so at the quote stage, never afterwards.
Do you have an office in Merton?
No. IGI Accounting is an online-only firm. We serve Merton and every other UK postcode remotely, with records sent by WhatsApp or email and everything filed electronically. The absence of local premises is why the fee for cis tax returns is the same in Merton as anywhere else in the country, and why there is nothing to visit and nothing to print.
Get a fixed quote for Merton today
Tell us what you need. You get one fixed fee in writing, and nothing is filed until you approve it.