MTD Late Payment Penalties: The Complete Guide to Avoiding Fines

HMRC’s penalty regime for Making Tax Digital is different from the old Self Assessment system. The new points-based penalty system for late submissions, combined with percentage-based late payment charges and daily interest, means that falling behind on MTD compliance can become expensive quickly. This guide explains every penalty that applies, how the points system works, what the late payment charges are, and most importantly how to avoid penalties entirely.

Written by ICAEW chartered accountants who help UK businesses avoid MTD penalties and negotiate with HMRC when penalties arise. We will cover MTD VAT penalties (in force since January 2023), MTD ITSA penalties (from April 2026), and the practical steps that eliminate penalty risk.

Two Separate Penalty Systems Under MTD

MTD has TWO separate penalty systems that operate independently:

Key distinction: You can be penalised for late submission even if you pay on time. You can be penalised for late payment even if you submit on time. They are independent. Filing your return on time but paying late still triggers payment penalties. Paying on time but filing late still triggers submission points.

Late Submission Penalties: The Points-Based System

Every time you miss an MTD submission deadline, you receive 1 penalty point. Once you reach the penalty threshold for your filing frequency, you receive a £200 penalty. Every subsequent late submission after reaching the threshold triggers another £200 penalty.

Penalty Points Thresholds

How Points Accumulate: Worked Example

A quarterly MTD VAT filer misses deadlines:

Important: Even being 1 day late counts as a missed submission and earns a penalty point. There is no grace period. The deadline is the deadline. If you submit at 11:59pm on 7 May, you are on time. If you submit at 12:01am on 8 May, you receive a point.

How to Reset Your Points to Zero

Points can be reset to zero if you achieve a period of compliance. The required compliance period depends on your filing frequency:

Once reset, your points go back to zero and you start fresh. Any outstanding penalties from before the reset still need to be paid, but future late submissions start from zero points again.

Late Payment Penalties: Percentage-Based Charges

Late payment penalties are completely separate from submission points. They apply when you owe VAT or Income Tax and do not pay by the deadline.

Late Payment Penalty Structure

Late Payment Worked Example

A business owes £8,000 VAT for Q1 2026 (deadline 7 May 2026) but does not pay:

The 15-day grace period is important: If you pay within 15 days of the deadline, NO late payment penalty applies at all. This gives you a small buffer. However, relying on the grace period is risky because bank transfers can take 2 to 3 working days. Direct Debit eliminates this risk entirely.

Interest on Late Payments

In addition to late payment penalties, HMRC charges daily interest on any outstanding tax from the day after the payment deadline until full payment. The interest rate is the Bank of England base rate plus 2.5%.

Current Interest Rate

As of 2026, with the Bank of England base rate at approximately 5%, the HMRC late payment interest rate is approximately 7.5% (5% + 2.5%). This rate changes whenever the Bank of England adjusts the base rate.

Interest Calculation

Interest is calculated daily on the outstanding balance: Outstanding tax x (Base rate + 2.5%) / 365 = daily interest charge. For £10,000 outstanding: £10,000 x 7.5% / 365 = £2.05 per day.

Interest is NOT a penalty: Interest accrues regardless of penalties. It is a separate charge. A business that is 3 months late on a £10,000 VAT payment faces: £300 first penalty (3%) + £300 second penalty (3%) + approximately £188 interest (92 days x £2.05) = £788 total cost of being 3 months late on £10,000. That is nearly 8% of the original bill.

MTD ITSA Penalties (From April 2026)

MTD ITSA uses the same penalty framework as MTD VAT. Points-based late submission penalties and percentage-based late payment penalties apply to:

•       Quarterly MTD ITSA submissions (4 per year plus annual Final Declaration)
•       Payments on account (due 31 January and 31 July)
•       Balancing payment (due 31 January following tax year end)

MTD ITSA Submission Penalty Points

Filing frequency is quarterly, so the threshold is 4 points before £200 penalties start. Missing 4 quarterly deadlines across any rolling period triggers the first £200 penalty. Every subsequent late submission triggers another £200.

MTD ITSA Payment Penalties

Same structure as MTD VAT: 15-day grace period, then 3% at day 16, further 3% at day 31, plus daily interest. These apply to payments on account and balancing payments.

Time to Pay Arrangements: Avoiding Penalties When You Cannot Pay

If you genuinely cannot pay your VAT or Income Tax bill on time, HMRC offers Time to Pay (TTP) arrangements. Setting up a TTP before the payment deadline prevents late payment penalties from being triggered.

How Time to Pay Works

1.     Contact HMRC before the payment deadline (critical: must be before, not after)
2.     Explain your cash flow situation honestly
3.     Propose a repayment schedule (typically 6 to 12 months)
4.     HMRC reviews and agrees terms
5.     You make monthly payments as agreed
6.     Interest still accrues on the outstanding balance (but late payment penalties do not apply if TTP is agreed before deadline)

Self-Service Time to Pay (Online)

For Self Assessment debts under £30,000, HMRC offers an online self-service Time to Pay facility. You can set up a payment plan in minutes without needing to call HMRC. Maximum 12 monthly instalments. Available via your Personal Tax Account on gov.uk.

For Larger Debts or VAT

For VAT debts or Self Assessment debts over £30,000, you need to contact HMRC’s Payment Support Service directly on 0300 200 3835. Have your VAT number or UTR ready, plus a clear proposal for how you will pay.

Time to Pay timing is everything: A TTP agreed BEFORE the payment deadline prevents late payment penalties. A TTP agreed AFTER the deadline means penalties have already been triggered (though HMRC may still agree the arrangement for the remaining balance). Always contact HMRC before the deadline if you anticipate difficulty paying.

How to Avoid MTD Penalties Entirely

1. Set Up Direct Debit for VAT

Direct Debit eliminates late payment risk entirely. HMRC collects the correct amount automatically 3 working days after the deadline. This is the single most effective penalty prevention measure for MTD VAT. Set it up once and forget about it.

2. Submit Returns Early

Do not wait until deadline day. Prepare and submit your return 2 to 3 weeks before the deadline. This gives you buffer time for any issues (software problems, missing information, HMRC system downtime). Early submission does not mean early payment. Payment is still due on the standard deadline.

3. Use Calendar Reminders

Set recurring calendar reminders 3 weeks before each deadline, 1 week before, and on deadline day. Most accounting software also sends deadline reminders. Do not rely on memory alone.

4. Keep Records Up to Date Weekly

Reconcile bank transactions and process receipts weekly. This means your return is essentially ready when the quarter ends, requiring only a final review before submission. Businesses that let bookkeeping pile up are the ones that miss deadlines.

5. Use an Accountant With Deadline Tracking

Professional accountants track every client deadline systematically. Missing a deadline is a serious professional failure that reputable firms build their processes around preventing. Using an accountant for MTD submissions effectively eliminates late submission risk.

6. Request Time to Pay Before Deadlines

If you know you will struggle to pay, contact HMRC BEFORE the deadline to arrange Time to Pay. This prevents late payment penalties even though interest will still accrue.

How to Appeal MTD Penalties

If you receive an MTD penalty, you can appeal if you have a reasonable excuse:

Reasonable Excuses HMRC Accepts

•       Serious illness or bereavement preventing filing or payment
•       HMRC system outage or technical failure preventing submission
•       Fire, flood, or other disaster affecting your records or premises
•       Postal delays or bank failures beyond your control
•       First-time late submission with genuine reasonable excuse

NOT Reasonable Excuses

•       Being too busy
•       Forgetting the deadline
•       Not receiving a reminder from HMRC
•       Finding the software difficult to use
•       Your accountant being late (unless you appointed them with reasonable time)
•       Cash flow difficulties (for late payment only, not for late submission)

How to Appeal

7.     Contact HMRC within 30 days of the penalty notice
8.     Explain your reasonable excuse clearly and specifically
9.     Provide supporting evidence (medical certificates, insurance reports, screenshots of system errors)
10. HMRC reviews and responds (typically 30 to 60 days)
11. If rejected, you can escalate to an independent review or First-tier Tribunal

Case Study: Reversing £600 in Accumulated MTD VAT Penalties

A small events management company based in the Cardiff area came to us in late 2025 with a growing penalty problem. The sole director had been managing her own MTD VAT submissions via QuickBooks but had missed 3 quarterly deadlines over the past 18 months (each by 2 to 7 days) due to a combination of busy event seasons and personal health issues. She was at 3 penalty points and had just missed a 4th deadline, triggering her first £200 penalty. Two subsequent late submissions had generated another £400 in penalties. Total penalty exposure: £600.

Her situation:

•       3 historical late submissions (each by 2 to 7 days)
•       4th late submission triggering first £200 penalty
•       5th and 6th late submissions each generating £200 penalty
•       Total penalties: £600
•       Underlying VAT payments were all made on time (late submission only, not late payment)
•       Personal health issues during the late period (documented)

What we did:

12. Reviewed the penalty history and confirmed all were submission-only (payments were on time)
13. Identified that the 4th and 5th late submissions coincided with a documented health condition requiring hospital treatment
14. Prepared reasonable excuse appeal for penalties 4 and 5, supported by medical evidence
15. Submitted appeal to HMRC with clear timeline showing health issue overlapping with filing deadlines
16. Took over ongoing MTD VAT submissions to prevent future late filing
17. Set up submission workflow with 3-week pre-deadline preparation schedule

Outcome: HMRC accepted the reasonable excuse appeal for 2 of the 3 penalties, reversing £400. The remaining £200 penalty for the earliest late submission (before the health issue) was upheld but accepted as fair. Points reset to zero after 12 months of on-time submissions under our management. Total saving: £400 in reversed penalties plus elimination of future penalty risk. Our fee: £130 per month for full MTD VAT management.

Complete MTD Penalty Summary Table

MTD Penalties: FAQs

How does the MTD points-based penalty system work?

Each missed submission deadline earns 1 penalty point. Quarterly filers reach the threshold at 4 points, triggering a £200 penalty. Every subsequent late submission generates another £200. Points reset to zero after 12 months of consecutive on-time submissions.

What is the penalty for late VAT payment under MTD?

15-day grace period (no penalty). At 16 days: 3% of outstanding tax. At 31 days: additional 3%. From day 31 onwards: daily interest at Bank of England base rate plus 2.5% (approximately 7.5% in 2026). These are cumulative.

Is there a grace period for late MTD submissions?

No. Unlike late payments (which have a 15-day grace period), late submissions trigger a penalty point from day 1. Being even 1 day late counts. There is no forgiveness window for filing.

How do I reset my penalty points to zero?

Submit all returns on time for a continuous compliance period: 12 months for quarterly filers (4 consecutive on-time returns), 6 months for monthly filers, 24 months for annual filers. Points then reset to zero.

What is a Time to Pay arrangement?

An agreement with HMRC to pay outstanding tax in instalments (typically 6 to 12 months). Critical: if agreed BEFORE the payment deadline, late payment penalties do not apply (interest still accrues). Self-service available online for Self Assessment debts under £30,000.

Can I appeal an MTD penalty?

Yes, if you have a reasonable excuse: serious illness, bereavement, HMRC system failure, fire or flood, postal or bank failures. NOT reasonable: being busy, forgetting, finding software difficult, cash flow problems (for submission penalties). Appeal within 30 days of the penalty notice.

Do late submission and late payment penalties apply separately?

Yes, completely independently. You can be penalised for late submission even if you paid on time. You can be penalised for late payment even if you submitted on time. Both can apply simultaneously.

How much is the penalty for missing an MTD VAT deadline?

First 3 missed deadlines: 1 point each, no cash penalty. 4th missed deadline: £200 penalty. Every subsequent late submission: £200. Plus late payment charges if VAT is also unpaid (3% + 3% + daily interest).

Does Direct Debit prevent MTD penalties?

Direct Debit prevents LATE PAYMENT penalties by collecting automatically on time. It does NOT prevent late SUBMISSION penalties. You still need to submit your return on time. Direct Debit handles payment only.

What happens if I cannot afford to pay my VAT?

Contact HMRC BEFORE the payment deadline to arrange Time to Pay. This prevents late payment penalties (interest still applies). For Self Assessment under £30,000, use the online self-service facility. For VAT or larger amounts, call HMRC on 0300 200 3835.

Are MTD ITSA penalties the same as MTD VAT penalties?

Yes, same framework. Points-based late submission penalties (4 points for quarterly = £200 penalty). Percentage-based late payment penalties (3% at day 16, 3% at day 31, plus daily interest). Applied independently for ITSA submissions and ITSA payments.

What if HMRC’s system was down when I tried to submit?

This is a reasonable excuse for appeal. Screenshot the error message with date and time. Contact HMRC to report the issue. Submit as soon as the system is available. HMRC generally accepts genuine system failures as reasonable excuse.

Can my accountant be liable for my MTD penalties?

Generally no. You are legally responsible for filing and payment, even if you use an accountant. However, if your accountant was negligent (you provided everything on time and they failed to file), you may have a professional negligence claim against them. Choose ICAEW chartered accountants with proper professional indemnity insurance.

What is the maximum MTD penalty I could face?

There is no theoretical maximum. Points-based penalties are £200 per late submission indefinitely. Late payment penalties compound (3% + 3% + daily interest) and grow until paid. Deliberate errors can attract penalties of 20% to 100% of the error. The practical answer: the longer you leave it, the worse it gets.

How do I check my current penalty points?

Log into your Business Tax Account (for VAT) or Personal Tax Account (for ITSA) on gov.uk. Your penalty points are displayed in the penalties section. Your accounting software may also show a penalty point summary.

Avoid MTD Penalties – Free ICAEW Consultation

The best penalty strategy is never getting one. Professional accountant management of your MTD submissions eliminates late filing risk entirely, and Direct Debit setup eliminates late payment risk. For penalties already received, chartered accountant support with reasonable excuse appeals can often reverse some or all charges.

At MTD – Making Tax Digital (part of B1 Accountants), our ICAEW chartered accountants manage MTD compliance for UK businesses with zero tolerance for missed deadlines. We can:

•       Handle all quarterly MTD submissions on your behalf (zero late filing risk)
•       Set up Direct Debit to eliminate late payment penalties
•       Appeal existing penalties with reasonable excuse documentation
•       Negotiate Time to Pay arrangements with HMRC before deadlines
•       Monitor your penalty points and compliance status
•       Provide fixed monthly fees from £40 covering all submissions

   

  Related Reading

• Easy MTD VAT Guide

• MTD VAT Returns Step-by-Step

• How to Register for MTD

• MTD Monthly vs Quarterly

• MTD Record Keeping Requirements

• MTD VAT Threshold Explained