A time to pay arrangement is not a concession HMRC grants out of goodwill. It is an assessment of whether you can realistically clear the debt over a period, decided on figures you supply.
That framing changes how you should prepare. The question is not whether the bill is inconvenient but what monthly amount you can sustain without missing the next one.
In our practice, the arrangements that fail were agreed optimistically in a single phone call. The ones that hold were worked out on paper first.
What is a time to pay arrangement?
An agreement to settle a tax debt in instalments rather than as one payment. GOV.UK explains that you may be able to set one up if you cannot pay in full. HMRC then checks whether it is affordable.
Who can ask for one?
Anyone who cannot pay a bill in full, though agreement never follows automatically. GOV.UK's guidance for people who cannot pay a tax bill on time sets out the position. Where no plan can be agreed, HMRC asks for the full amount instead.
Where you cannot agree a plan, HMRC will ask you to pay the amount owed in full.
So the request is the start of a discussion rather than the end of one, and the quality of your figures decides how it goes.
Does the return have to be filed first?
In practice yes, because an arrangement settles a known figure rather than an estimate. Filing also removes the separate penalty for missing the deadline, which HMRC charges regardless of any payment difficulty.
The Self Assessment deadlines fix when that return is due, and the payment date does not move with any filing extension.
File first, then negotiate. That order is worth more than any argument you could make afterwards.
| What HMRC wants to know | Why | What to have ready |
|---|---|---|
| What the liability is | A plan needs a known figure | The filed return |
| What you can pay now | Reduces the balance immediately | Current account position |
| What you can pay monthly | Sets the instalment | Income and outgoings, worked out |
| Why you cannot pay in full | Context for the assessment | A short, factual explanation |
| Whether other tax is owed | The plan usually covers everything | A list of outstanding amounts |
| Your bank details | Collection by direct debit | Account able to meet the payments |
What does affordable actually mean?
An amount you can pay every month without creating next month's problem. HMRC looks at what comes in, what necessarily goes out, and what remains. Discretionary spending is where these conversations turn uncomfortable, so work through that part yourself before the call.
Discretionary spending is where these conversations become uncomfortable, so work through it yourself beforehand.
Offer a figure you can meet every month rather than the most you could manage in a good one. A plan that holds is worth more than a shorter one that breaks.
How long can a plan run?
Long enough to clear the debt on a realistic schedule, which depends on both the amount and what you can afford. No single period applies to everyone, and shorter is always cheaper because interest runs throughout the arrangement.
Shorter is cheaper, because interest runs throughout.
Where the arithmetic will not produce a workable monthly figure over any reasonable period, that is itself information. It usually points to a wider conversation about the debt rather than a longer plan.
Does interest still run?
Yes, on the outstanding balance, throughout the arrangement. A plan is not a freeze and it does not reduce what you owe. Because interest keeps accruing, paying more early costs less overall, so front-load the schedule rather than spreading it evenly out of habit.
It does prevent escalation while you pay, which counts for a great deal on its own.
Because interest continues, paying more early costs less overall. Front-load the plan if you can rather than spreading it evenly out of habit.
Check the current rate before you decide the length of the plan. It moves with the Bank of England base rate, so the cost of spreading a bill is not fixed.
What if you are abroad?
The arrangement works the same way, though the practicalities take longer to handle. Time differences complicate telephone discussions. HMRC may also write to a UK address you no longer use, so update your details in advance.
Update your address before you need to negotiate, not during.
Keep a UK bank account open where you can, since collection by direct debit is the normal mechanism.
Our article on tax on UK income if you live abroad covers what continues to fall due once you have left.
What happens if you miss an instalment?
HMRC can cancel the arrangement, and the whole balance falls due again, which is the most expensive outcome available here. Contact them before a payment fails rather than afterwards, because a variation agreed in advance is routine while a silent default is not.
Contact HMRC before the payment fails rather than afterwards, because a variation agreed in advance is ordinary and a default is not.
Circumstances change, and HMRC will usually revisit an arrangement once. Breaking it silently removes that possibility.
Can you include future payments on account?
It depends on your position, so raise it explicitly. Payments on account fall due in January and July, which means a July instalment can overtake a plan agreed in February. That mismatch is a common reason arrangements fail part way through the year.
That is a common reason for plans failing part way through the year.
Ask how the arrangement interacts with the next payment date before agreeing to it. Our article on payments on account explains the calculation and when you can reduce them.
What if the bill is wrong?
Correct it rather than paying it in instalments. An arrangement suits a liability you accept, not a substitute for amending a return or appealing an assessment. Where you dispute part of the figure, arrange the rest and challenge that part separately.
Where you dispute part of the figure, arrange the rest and challenge that part separately.
Interest continues on whatever eventually proves to be due, so a dispute is not a reason to delay dealing with the rest.
GOV.UK sets out the penalties that apply if a return is late, which is a separate matter from any dispute about the figure.
Does it affect anything else?
An agreed arrangement shows that you engaged, which matters if you later ask for penalty relief, and it also records a commitment you have made. For anyone filing in two countries it changes nothing on the American side, because the IRS neither knows nor cares about an HMRC plan.
For anyone who files in two countries, it does not affect the American position at all. The IRS neither knows nor cares about an HMRC plan.
Keep the agreement letter and the payment record with your tax papers for the year concerned.
What if you owe more than one kind of tax?
Say so at the very start of the conversation. An arrangement normally covers everything you owe rather than a single bill, and a second debt surfacing later can unravel the first agreement entirely. List Self Assessment, any VAT and anything else outstanding before you call.
List Self Assessment, any VAT and anything else outstanding before you call.
One plan covering the total beats two competing ones. GOV.UK also explains how to pay a Self Assessment bill in instalments voluntarily, before a deadline.
Time to pay and the American side
The two systems run independently, so a British arrangement neither helps nor hinders an American one. You can hold plans with both authorities at once.
What matters across the two is the credit timing. A foreign tax credit follows tax actually paid, so spreading a UK bill across years can move when the credit becomes available.
That point rarely changes the decision, though it does change the American return. Mention any arrangement to whoever prepares it.
Who should make the call?
You, or an agent authorised to act for you. HMRC will discuss an arrangement with an accountant who holds that authority, which neatly solves the time difference problem for anyone living abroad. Authorisation takes a few days to set up, so arrange it well before the deadline.
Authorisation takes a few days to set up, so arrange it before the deadline rather than during the conversation.
Either way, the figures have to come from you. Nobody can propose a sustainable monthly amount without knowing your outgoings.
What records should you keep afterwards?
The agreement itself, the schedule of payments, and confirmation that each one left your account. Those three documents matter twice: once if a payment goes astray, and again if you later ask for penalty relief on the same year.
They matter twice: once if a payment goes astray, and again if you later ask for penalty relief on the same year.
Keep them with that year's tax papers rather than in an email folder.
Preparing for a time to pay discussion, step by step
Half an hour with a spreadsheet changes the outcome of the conversation.
- File the return so the liability is a known figure.
- Pay whatever you can immediately, to reduce the balance and the interest.
- List your monthly income and your necessary outgoings honestly.
- Work out the monthly figure you could sustain for a year without difficulty.
- List every other amount owed to HMRC, so the plan covers everything.
- Check what falls due next January and July before agreeing anything.
- Have bank details ready for collection, and confirm the account can meet the payments.
What a time to pay plan will not do
It will not reduce the tax. Nor will it stop interest, remove a filing penalty already charged, or settle anything owed elsewhere.
It buys an orderly schedule and nothing more. That is worth having, and it is worth understanding before you ask for one.
Where the underlying problem is that the tax was never provided for, the plan treats a symptom. Fixing the provisioning matters more than the schedule.
We usually set both up at once: the plan for this year, and a standing transfer for the next.
An illustrative example
Take an illustrative case. A freelancer files on time and owes £11,400, having had a strong year followed by a quiet one.
She pays £3,000 immediately, works out that £700 a month holds, and proposes it rather than waiting for HMRC to ask. The arrangement runs twelve months with interest on the declining balance.
She raises her July payment on account at the outset rather than meeting it later. The figures are illustrative; the preparation is the part that made it straightforward.
Common mistakes we see
First, asking for a plan before filing the return. Second, proposing a monthly figure that assumes a good month every month.
Third, forgetting the next payment on account, which then breaks the plan. Fourth, missing a payment without warning rather than asking to vary it.
Fifth, treating an arrangement as a pause on interest. Sixth, leaving a UK address out of date so the correspondence never arrives.
Seventh, arranging time to pay without fixing why the money was not there. A plan clears this year's bill and does nothing about next year's, which arrives on exactly the same date.
How US UK Tax Hub helps with time to pay
We file the return first to settle the figure, then prepare the affordability picture HMRC asks about. That preparation is usually the difference between an agreement and a demand.
Our UK Self Assessment service covers the return and the correspondence. We also make sure the next payment on account joins the conversation early.
Tell us the amount and what you can manage monthly, and we will help you propose something that holds.
