Contractor finance | London and the UK

Late CIS, PAYE and VAT: which penalty clock applies?

Separate missing returns from unpaid tax, work out the next charge and give each action an owner.

Last updated: 14 September 2026
Qualified accountants
Written scope and fees
London and UK support
Kris, Account Manager

A late CIS return starts with a £100 penalty, but payroll reporting, PAYE payments, VAT returns and VAT payments follow different rules. Identify each missing report and unpaid balance separately. Filing does not clear a payment penalty, and paying does not submit a return. Deal with both together, using the relevant dates and available cash.

By Kris Nick, Account Manager
Reviewed and signed off by a senior qualified accountant on the LOYALS team.
11 min read

Which obligation has actually been missed?

There are five checks, not one general late-tax calculation. The Construction Industry Scheme (CIS) covers reporting payments to construction subcontractors. Pay As You Earn (PAYE) covers payroll reporting and amounts paid to HMRC. Value Added Tax (VAT) has its own return and payment rules.

For a business with several companies or payroll schemes, use a separate line for each reference and period. A bank transfer labelled “HMRC” is not evidence that the right liability has been paid, just as a completed payroll run is not evidence that HMRC accepted the report. Reconcile the submission receipt, tax account and bank entry.

ObligationWhat to establishSeparate next action
CIS monthly returnSubcontractor payments for the tax month, including gross paymentsFile the correct return or deal with the applicable nil/inactivity position
Payroll reportFull Payment Submission (FPS), the report of employee pay and deductions, and any required Employer Payment Summary (EPS)Check accepted reports before sending missing information or corrections
PAYE and CIS paymentThe correct balance, tax reference, due date and payment allocationPay what is due or discuss instalments without waiting for unrelated drafting
VAT returnThe period, accepted submission and current penalty pointsSubmit an accurate return even if the payment is a separate problem
VAT paymentBalance still unpaid, overdue day count and applicable rate regimeAssess the next payment-penalty date as well as interest

Our construction and CIS accounting service covers the recurring controls behind these checks. If the underlying problem is uncertain cash rather than missing reports, link the tax schedule to your monthly management accounts, so upcoming liabilities appear beside expected receipts.

Start with the amounts you can prove

Our free tax calculators can help with wider planning. They are not a substitute for the arrears register below or an HMRC penalty calculation, which depends on dates, history and exceptions.

How do late CIS returns and nil months work?

The standard CIS filing penalties increase while a return remains missing. HMRC expects the return by the nineteenth after the tax month, which runs from the sixth to the fifth. The usual sequence is £100 when late, another £200 at two months, then the greater of £300 or 5% of the deductions at six months and again at twelve months.

One missing CIS return: cumulative standard penaltiesIllustrative UK return with £9,000 deductions and no deliberate withholding: cumulative filing penalties are £100 when late, £300 at two months, £750 at six months and £1,200 at twelve months. Separate payment charges are excluded. One missing CIS returnIllustrative standard penalties, £ 0 500 1,000 1,500 £100Late £3002 months £7506 months £1,20012 months £9,000 deductions; payment charges excluded
UK CIS example: £100 + £200 + £450 + £450 = £1,200. The six and twelve-month charges are each 5% of £9,000, above the £300 minimum. Illustration, not client data.

This illustration excludes deliberate withholding, where the twelve-month charge can be higher. It does not add an automatic fifth penalty of £3,000 after a year. HMRC's separate record-keeping penalties should not be folded into this standard filing timeline.

Mainstream contractors are construction businesses and property developers. Deemed contractors are other businesses or bodies brought into CIS because of their construction spending. From 6 April 2026, mainstream contractors with no subcontractor payments must file a nil return or notify inactivity by the nineteenth. Deemed contractors are different: there is no legal nil-return requirement, and HMRC should cancel an automatic penalty when told that no subcontractors were paid. Match an older period to the rules then in force, rather than applying the reinstated rule backwards. See HMRC CIS contractor guidance, sections 4.5 and 4.18.

Keep this separate from the question of CIS gross payment status. This guide deals with missed obligations and the next action, not a fresh application for that status.

Why must PAYE reporting and payment be checked separately?

A late payroll report is not the same as an unpaid payroll tax bill. An FPS is normally due on or before payday. Monthly reporting penalties are £100 for 1 to 9 employees, £200 for 10 to 49, £300 for 50 to 249 and £400 for 250 or more.

HMRC's limited three-day allowance for reporting is not permission to report late routinely. Other exceptions include the first failure in the tax year, except annual schemes, and a new employer's first FPS sent within thirty days of first paying an employee. Check which exception actually applies, rather than assuming that every first notice is wrong. An EPS is needed where no employees were paid in a tax month.

A “specified charge” is HMRC's estimate where reporting is missing. Check the original submission history and follow the missing FPS or EPS route; adding later year-to-date figures alone does not remove that specified charge. HMRC payroll reporting penalties explains the reporting rules and appeals.

For monthly or quarterly PAYE payment penalties, the first late payment in the tax year is ignored in counting defaults. The counted defaults then set the rate: 1 to 3 means 1%, 4 to 6 means 2%, 7 to 9 means 3%, and 10 or more means 4%. Unpaid balances can attract an additional 5% at six months and another 5% at twelve months, even if only one payment was late. Interest is separate.

These payment rules also cover CIS deductions paid to HMRC. Annual or occasional liabilities can follow a different timetable, so do not use this monthly/quarterly table for every notice. Check HMRC PAYE payment penalties against the actual charge.

A control that works across sectors

Our ongoing work for a domiciliary care provider with about 46 staff includes payroll, bookkeeping and management reporting. The useful connection is the same for a contractor: the payroll record, bank payment and monthly accounts need to agree. That is an example of the work we do, not a claim about penalties saved for a construction client.

What changes between VAT filing, payment and interest?

A late VAT return can create a point even where nothing is payable or a repayment is due. For accounting periods starting on or after 1 January 2023, the usual thresholds are two points for annual returns, four for quarterly and five for monthly. Reaching the threshold brings a £200 penalty; each further late return while at the threshold brings another £200.

The first and final returns and certain one-off returns are excluded, and non-standard periods have specific rules. Check your actual period and point history against HMRC VAT submission points. Paying the tax does not submit the return or clear the points.

The following payment example uses the 3%, 3% and 10% regime. It applies to amounts due on or after 31 May 2025 unless the VAT accounting period began before 1 April 2025. Earlier cases use the relevant older rates, not this illustration.

VAT payment penalties on a £10,000 unpaid balanceIllustrative UK VAT payment under the 3%, 3% and 10% regime: no payment penalty through day fifteen, £300 from day sixteen to thirty, about £602.74 on day thirty-one and £627.40 when paid on day forty. Interest and filing penalties are excluded. VAT: payment day matters£10,000 illustration; interest excluded 0 200 400 600 £300£627.40 Day 15 Day 16 Day 30 Day 31 Day 40 Selected checkpoints, not a uniform time axis
UK VAT example: paying on day 40 gives a £600 first penalty and £27.40 second penalty. The separate interest bill is additional. No part-payment, relief or agreed instalment arrangement is assumed.

Through day 15 there is no late-payment penalty. From day 16 the first penalty uses 3% of the amount outstanding at day 15. If payment remains outstanding beyond day 30, it also includes 3% of the day-30 balance. From day 31 a separate second penalty builds daily at 10% a year, through the payment day. A part-payment changes the relevant unpaid balances.

A Time to Pay proposal, meaning a request to pay in instalments, can affect the penalty timeline if HMRC subsequently agrees it and you keep to it. It is not enough simply to ask, and charges already incurred do not all disappear. The detailed calculation is in HMRC VAT payment penalty calculations.

Interest still applies. It runs from the first overdue day until full payment, including during agreed instalments. We have left interest outside the worked penalties because it is a separate calculation using the applicable rate over the relevant dates. See HMRC VAT interest guidance.

More than one company or tax period involved?

Tell Kris which references and periods need checking. Please do not send passwords or access codes. Discuss the scope on WhatsApp.

What could forty days late cost?

The same delay can produce different charges because the tests differ. These are separate illustrative cases, not a combined bill or a quotation. Assume a UK contractor with six employees, no deliberate withholding, no successful appeal, no special relief and no instalment agreement.

CaseExtra assumptionIllustrative penalty
One CIS return, 40 days lateStandard filing treatment; the two-month stage has not been reached£100
One penalised payroll reporting monthFirst-failure exemption already used; reporting outside the three-day allowance; no other exception£100
£10,000 monthly PAYE, 40 days lateFirst counted default after the ignored first late payment; no later defaults change its rate£100, plus interest
One quarterly VAT return lateThree points already held; this return takes the total to four£200
£10,000 VAT paid on day 40Current 3%/3%/10% regime; full balance outstanding throughout£600 first penalty + £27.40 second penalty = £627.40, plus interest

The VAT second penalty is £10,000 × 10% × 10 ÷ 365 = £27.40, rounded to the penny, because days 31 to 40 inclusive are ten days. This is why “6% once it passes thirty days” is incomplete. Keep the filing penalty, payment penalties, interest and original tax on different lines.

What should the finance team do next?

Build one dated arrears register and deal with filing and payment work in parallel. The most useful priority is the next avoidable charge or an expiring appeal deadline, not an automatic instruction to finish the oldest return before speaking to anyone about payment.

  1. Confirm the starting position. Record the company, tax reference, period, due date, accepted submission receipt, amount due, amounts paid and HMRC allocation. Separate estimated charges from established liabilities.
  2. Name the missing work. Give each return or correction a preparer, a reviewer and a completion date. Check existing reports before submitting again. Do not fill gaps with guessed payroll or subcontractor figures.
  3. Mark the next change in cost. Record the relevant CIS milestone, VAT payment checkpoint or prolonged PAYE arrears date, with the working calculation. Record appeal deadlines from each notice separately.
  4. Decide payment and contact actions today. Reconcile available cash with essential commitments and authorised payments. Contact HMRC promptly if instalments are needed; retain the proposal date, reference and agreed terms. Do not assume a request has been accepted.
  5. Review disputed charges on evidence. Compare the notice with receipts, payment dates and the relevant exception. Follow its appeal instructions and retain evidence for any reasonable-excuse argument; cancellation is not guaranteed.
  6. Close the control gap. Keep submission acceptance and payment confirmation as two separate sign-offs. Put the next period's deadlines into the monthly finance pack, with cover for the person normally responsible.

For example, if a bookkeeper can complete a missing report while a director authorises payment, there is no operational reason to make one wait for the other. A checklist only works when its entries show evidence of completion, rather than “sent to accountant” or “payment arranged”.

ApproachWhat it can doWhat still needs an owner
Software remindersPrompt a filing or payment dateConfirm data quality, acceptance and the right payment reference
One-off arrears reviewEstablish missing periods and disputed chargesImplement corrections, fund payments and monitor agreed actions
Ongoing LOYALS supportBring agreed payroll, CIS and monthly reporting work into one finance processAgree scope, supply records and retain management approval of payments

LOYALS Accountants & Business Consultants provides ongoing accounting support for established UK businesses. The aim is a reliable monthly process around your contracts, payroll and cash, with responsibility agreed in writing, not a promise that every penalty can be removed.

Share the checklist with the person managing the returns.

Ongoing construction and CIS support

  • CIS contractor accounting: from £695 a month
  • Weekly payroll or 15 or more subcontractors: from £995 a month
  • Developers and multi-entity businesses: from £1,500 a month
  • Gross payment status application: £400 one-off
  • Domestic reverse charge VAT setup: £250 one-off
  • CIS enquiry support: from £695 one-off

All fees exclude VAT and are fixed for twelve months. Quotes are issued in writing within 24 hours after a 15-minute call, and we do not take on ongoing work below £500 a month. See full price list.

Frequently asked questions

What is the penalty for a late CIS return?+
The standard sequence is £100 when late, another £200 at two months, then the greater of £300 or 5% of the deductions at six months and again at twelve months. Deliberate withholding can attract a higher twelve-month charge. Paying the deductions does not file the return.
Is late PAYE filing the same as late payment?+
No. A missing payroll report and an unpaid PAYE balance are separate failures. Reporting penalties depend on employee numbers and exemptions. Monthly or quarterly payment penalties depend on counted defaults and how long the amount remains unpaid.
Does paying VAT within fifteen days avoid every charge?+
No. It avoids a late-payment penalty under the current regime, but late-payment interest still runs from the first overdue day. A late VAT return can also trigger a point or submission penalty independently of payment.
Does Time to Pay stop VAT interest?+
No. Interest continues on the unpaid balance during an instalment arrangement. A proposal that HMRC subsequently agrees, and that you keep to, can affect the payment-penalty calculation. It does not erase every charge already incurred.
Do contractors need to send nil CIS returns?+
From 6 April 2026, mainstream contractors must submit a nil return or notify inactivity by the nineteenth when they have paid no subcontractors. Deemed contractors have different rules: they are not legally required to file a nil return and an automatic penalty should be cancelled when HMRC is told that no subcontractors were paid.
Should we wait until the returns are finished before contacting HMRC?+
No. Establish the missing reports and unpaid balances together. Complete accurate returns promptly, but deal with available payments, approaching payment-penalty dates and a request for instalments in parallel. Keep a dated record of submissions, payments and contact with HMRC.
K

Kris Nick, Account Manager

Kris is the account manager and day-to-day point of contact for LOYALS clients, working alongside our team of qualified accountants and experienced finance professionals across care, hospitality and construction. Open Mon to Sat 10am to 7pm.

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