Negotiating with HMRC over tax arrears works best when you approach it as an honest, evidenced conversation rather than a battle. HMRC has established processes for companies that owe VAT, PAYE or corporation tax and cannot pay in full, and it will usually engage constructively if you come to the table early, with real numbers and a realistic offer. This guide sets out the mindset and tactics that make those conversations go well.
It is not a substitute for advice on your specific arrears, and it does not cover the mechanics of a Time to Pay arrangement step by step — for that, see our guide to HMRC Time to Pay Arrangements Explained. Instead, this article focuses on how to communicate with HMRC so that your case is taken seriously.
Why engaging early changes outcomes
HMRC's debt management teams have discretion, but that discretion narrows the longer a debt is ignored. A director who calls before a payment is missed is treated very differently from one who only responds after enforcement action has started.
Early contact signals that you are managing the business responsibly, not avoiding the problem. It also gives you more options: HMRC can consider a longer repayment period, lower monthly instalments, or a short payment holiday if you approach it before arrears build up or a winding-up petition becomes a live risk — see Owe HMRC and Can't Pay? Your Options for the wider picture. HMRC's own guidance on what to do if you cannot pay your tax bill on time confirms that contacting them as soon as possible is the starting point for any arrangement.
Waiting until a letter threatens legal action narrows your room to negotiate. By then, HMRC is often working to a shorter internal timetable and has less flexibility to offer.
What HMRC can and cannot flex on when negotiating with HMRC
Understanding HMRC's boundaries saves time and stops you asking for something that was never on the table. Broadly, HMRC can:
- Agree a repayment schedule spread over a number of months, based on what the business can genuinely afford.
- Adjust the size and timing of instalments if your circumstances change during the arrangement.
- Take a commercial view on how quickly a struggling but viable business should clear its debt.
HMRC generally cannot:
- Write off the underlying tax debt itself — a Time to Pay arrangement defers payment, it does not cancel liability.
- Waive statutory interest, though penalties are sometimes open to review in limited circumstances.
- Agree to indefinite delay with no repayment plan or end date.
Knowing this distinction — flexible on timing, firm on the debt itself — keeps expectations realistic and the conversation productive.
Preparing your case and your numbers
HMRC responds to evidence, not assertions. Before you call, gather the figures that show what the business can realistically afford and why.
- Up-to-date management accounts or a cash flow forecast covering at least the next three to six months.
- A clear breakdown of the arrears — which taxes, which periods, and the exact amounts owed.
- Evidence of what changed: lost contracts, a bad debt, seasonal downturn, or a one-off cost.
- A proposed monthly repayment figure you can genuinely sustain, not an optimistic one.
A well-prepared director who can answer questions about affordability tends to move through the call quickly. Vague or unsupported figures usually lead to further questions, delay, or a shorter arrangement than you hoped for. Our guide, How to Negotiate a Time to Pay With HMRC, covers the specific figures HMRC typically asks for.
Keeping communication credible and consistent
Credibility is built through consistency, not persuasion. HMRC deals with thousands of businesses in financial difficulty and can usually tell the difference between a director in genuine control of the situation and one who is hoping the problem goes away.
A few habits help:
- Answer calls and respond to letters promptly, even if the news is not good.
- Stick to the figures you have already given — do not revise them upward or downward without explanation.
- Keep a written note of every call, including the date, the name of the officer, and what was agreed.
- Tell HMRC as soon as something changes, rather than letting a missed payment speak for itself.
Directors who keep their word on smaller commitments — returning a call, sending a document by an agreed date — tend to find HMRC more willing to be flexible on the bigger ask.
When to bring in a regulated specialist
Some conversations with HMRC are straightforward enough for a director to handle directly. Others benefit from someone who negotiates with HMRC regularly and understands how far a case can realistically be pushed.
It is worth involving a regulated insolvency practitioner or solicitor if the arrears span multiple tax types, the business has struggled to keep to a previous arrangement, or HMRC has already mentioned formal recovery action. A specialist can also advise on whether a Time to Pay arrangement is still the right route, or whether a formal restructuring process would serve the company better.
Harbourfirst does not negotiate with HMRC or give insolvency advice itself — it introduces directors to regulated practitioners and solicitors who do this for a living.
Common mistakes that make things worse
Some patterns come up again and again in HMRC negotiations, and each one tends to shrink the options available:
- Going silent. Missed calls and unanswered letters are read as a lack of engagement, not a temporary lapse.
- Over-promising. Agreeing to a monthly figure you cannot actually meet leads to a broken arrangement and less trust next time.
- Treating HMRC like an ordinary creditor. HMRC has statutory powers, including the ability to petition to wind up a company under the Insolvency Act 1986, that most trade creditors do not.
- Negotiating without numbers. Asking for "more time" without a plan rarely results in a workable arrangement.
- Leaving it until enforcement starts. Once bailiffs, a statutory demand, or a winding-up petition are involved, the conversation becomes far harder.
Frequently asked questions
Will HMRC ever write off tax arrears?
Not as a rule. A Time to Pay arrangement spreads payment over time; it does not cancel the underlying debt. In rare cases, penalties or interest may be reviewed, but the core tax liability remains payable.
What happens if I miss a payment during an arrangement?
Contact HMRC immediately, before the payment is due if possible. A single missed payment explained in advance is treated very differently from silence followed by a default, which can lead HMRC to cancel the arrangement and demand the balance in full.
Can HMRC agree a deal over the phone, or do I need it in writing?
HMRC will often confirm an arrangement verbally on the call, but you should always ask for written confirmation of the agreed terms, including the amount, instalments, and dates, for your own records.
How long can a negotiated arrangement with HMRC last?
There is no fixed maximum, but arrangements are usually assessed on affordability, and HMRC will want to see the debt cleared within a period it considers reasonable for the business's circumstances — often within twelve months, sometimes longer where the case supports it.
Does negotiating with HMRC stop a winding-up petition?
A live, accepted arrangement can reduce the risk of a petition being issued or pursued, but it is not an automatic shield. Winding-up petitions that proceed are advertised publicly in The Gazette.
This article is general information, not legal, financial or insolvency advice, and does not take account of your company's specific circumstances.
If you would like to talk through your options with a regulated specialist, Harbourfirst can introduce you to an insolvency practitioner or solicitor — start an enquiry.