HMRC Late Payment Interest: Why Paying Tax Late Has Become More Expensive
HMRC late payment interest is currently 7.75% from 9 January 2026, which means overdue tax can become expensive quickly. Since 6 April 2025, HMRC’s late payment interest rate has generally been set at the Bank of England base rate plus 4%, rather than base rate plus 2.5%.
That means paying tax late is no longer a small admin issue. If you miss a VAT, Corporation Tax, PAYE, Self Assessment or property tax deadline, interest may start building while penalties may also apply. For VAT, HMRC confirms that late payment interest runs from the first day the payment is overdue until the amount is paid in full.
If you run a business, manage property, work as a landlord or operate through a limited company, the message is simple. You need to know what you owe before the deadline arrives.
At accountancy firms in Nottingham such as FHP Accounting, the focus is not just on filing returns. It is also about helping you plan tax payments, manage cash flow and avoid unnecessary HMRC charges.
Why HMRC late payment interest has become more costly
HMRC late payment interest has become more expensive for 2 main reasons.
First, interest rates are much higher than they were during the ultra-low-rate years many businesses became used to. Because HMRC late payment interest is linked to the Bank of England base rate, the cost of late tax rises when the base rate is higher.
Second, HMRC increased the margin added to the base rate from 6 April 2025. Late payment interest is now generally base rate plus 4%, compared with base rate plus 2.5% before that date.
So even though the current rate of 7.75% is lower than the 8.5% rate that applied from 6 April 2025, it is still high enough to put pressure on your cash flow.
Interest is calculated daily. A short delay on a small bill may not be too damaging, but a larger VAT, Corporation Tax or Self Assessment balance can become costly if it stays unpaid for weeks or months.
Interest and penalties are not the same thing
A common mistake is thinking interest and penalties are the same. They are separate.
Interest is charged because tax has been paid late. It normally runs from the payment due date until the tax is paid.
Penalties are extra charges that may apply depending on the tax, how late the payment is and whether you have contacted HMRC in time.
For VAT periods where the current late payment penalty rates apply, HMRC’s rules are stricter than many businesses realise. There is usually no first late payment penalty if the VAT is paid up to 15 days late. If payment is between 16 and 30 days late, the first late payment penalty is calculated at 3% of the VAT outstanding at day 15. If payment is 31 days or more overdue, the first penalty is 3% of the amount outstanding at day 15 plus 3% of what is still outstanding at day 30. A second penalty is then charged daily at an annual rate of 10% on the outstanding balance from day 31.
That is why acting early matters. Even if you cannot pay in full, dealing with the issue before day 15 can reduce the risk of extra VAT penalties.
FHP Accounting’s guide to HMRC crackdown on late payments is also worth reading if you want to understand why payment discipline is becoming a bigger issue for businesses.
Why this matters for your cash flow
Late payment interest is usually a cash flow problem before it becomes a tax problem.
A tax bill is rarely a surprise if your records are up to date. The real issue is often that the business has not reserved enough cash in time. That can happen when invoices are paid late, bookkeeping falls behind or directors rely too heavily on the bank balance.
Your bank account may look healthy today, but that cash may already be needed for VAT, PAYE, Corporation Tax, supplier bills, loan repayments or wages.
This is where support from bookkeepers in Nottingham can be valuable. Clean bookkeeping helps you understand what money is really available, not just what appears in the bank.
FHP Accounting’s Bookkeeping health check guide is useful if your records are starting to feel messy before a deadline.
VAT is one of the biggest risk areas
VAT can catch businesses out because you often collect it from customers before paying it to HMRC. If that money is treated like normal working capital, the VAT deadline can become stressful.
From 1 January 2023, HMRC charges VAT late payment interest from the first day a payment is overdue until it is paid in full. This applies to VAT-registered businesses and can also apply to overdue VAT penalties.
That means you should not wait until the VAT deadline to find out what you owe. A better approach is to check your VAT position during the quarter, especially if your sales are changing or you have large purchases.
If VAT is becoming a recurring pressure point, support with VAT return services can help you avoid last-minute problems.
FHP Accounting’s guide to VAT Registration for Growing Businesses is also useful if your business is close to the VAT threshold or already registered but struggling with the process.
If you use cloud accounting software, VAT in Xero can help you understand how digital records, VAT returns and Making Tax Digital submissions fit together.
Corporation Tax and limited companies
Corporation Tax can be easy to overlook because the payment deadline is earlier than the filing deadline.
For companies with taxable profits of up to £1.5 million, Corporation Tax is usually due 9 months and 1 day after the end of the accounting period. The Company Tax Return is usually due 12 months after the end of the accounting period.
This gap can create problems if you wait until the return is prepared before thinking about payment.
If your company has had a strong year, you should estimate Corporation Tax before the payment deadline. Waiting until the final weeks can leave you short of cash, especially if you have also spent money on stock, staff, equipment or director drawings.
This is particularly important if your business is new. Working with an accountant for start up businesses can help you build tax reserves into your planning from the start.
FHP Accounting’s article on Choosing the Right Business Structure at Launch is useful if you are deciding whether to trade as a sole trader, limited company or partnership.
You may also want to read New Limited Company Essentials if you have recently incorporated and want to avoid missing early responsibilities.
Director loans can create extra pressure
If you run a company, a Director’s Loan Account can make late tax payment more complicated.
For example, if money has been taken out of the company and the tax bill arrives later, the company may not have enough cash left to pay HMRC. That can lead to interest, penalties and difficult decisions about repayments, dividends or salary.
This is not always deliberate. Sometimes directors take money based on the bank balance without checking whether enough has been reserved for VAT, Corporation Tax or PAYE.
A regular review of your drawings, profit and tax position can help you avoid this.
FHP Accounting’s guide on How to avoid a Director’s Loan Account problem explains why repayments, write-offs and HMRC risk flags should be handled carefully.
Landlords and property investors need to plan earlier
If you are a landlord, property investor or developer, late tax payment can become expensive because property cash flow is not always smooth.
You may have rental income coming in monthly, but repairs, mortgage costs, service charges, void periods and tax payments rarely arrive evenly. If you do not plan ahead, the tax bill can feel sudden even when the income has been building throughout the year.
Working with an accountant for landlords can help you understand your rental profit, allowable expenses and tax position before the deadline arrives.
This becomes even more important if your portfolio includes different property types. Short-term lets, HMOs, commercial units and jointly owned property can all create different accounting and tax questions.
FHP Accounting’s guide to Making Tax Digital for Landlords is useful if you need to prepare for digital records and quarterly updates.
Their article on Personal tax returns for landlords also covers important points for landlords with overseas income.
For mixed property income, Short-term lets and HMOs gives a helpful overview of accounting, VAT questions and expense allocation.
Property tax needs proper records
Property tax can be detailed. You may need to consider repairs, capital improvements, finance costs, service charges, VAT, Capital Gains Tax and ownership structure.
If you are dealing with larger transactions or a growing portfolio, a tax accountant property specialist can help you understand the tax treatment before decisions are made.
That is much better than trying to correct the position after the deadline has passed.
Property owners often need to distinguish between repairs and capital improvements. This affects whether costs are deducted from income or treated differently for tax purposes.
FHP Accounting’s article on Capital allowances on property is a useful guide if you own or run property as part of a business.
The Year-End Checklist for Property Portfolios is also worth using before tax deadlines because it helps you review compliance, reporting and key figures in one place.
Commercial property and managing agents
Commercial property creates another layer of risk because payments may involve rent, service charges, deposits, management fees, supplier costs and client money.
If your records are unclear, you may struggle to identify what belongs to the business, what belongs to clients, what is taxable and what still needs reconciling.
This is where accounting for property management can make a real difference. It is not just about producing accounts at the end of the year. It is about keeping financial information clean enough to support decisions throughout the year.
If you manage commercial property, FHP Accounting’s guide to Tenant Deposit Accounting For Commercial Property is useful for understanding controls around tenant money.
You may also want to read Reconciling property client money under RICS rules if month-end reconciliations are becoming difficult.
RTM and residential management companies
Right to Manage companies and residential management companies can also face challenges with timing. Service charge income, supplier invoices, reserve funds and year-end accounts all need careful handling.
If you are a director, you may not be managing tax in the same way as a trading business, but you still need clean records and clear sign-off. Weak processes can lead to late filings, unclear balances and avoidable queries.
Working with accountants right to manage services can help you keep service charge and company records more organised.
FHP Accounting’s article on RTM Directors’ Finance Responsibilities is a useful read if you need practical steps for approvals, sign-off and traceable decisions.
For service charge issues, Common service charge mistakes highlights problems that can appear before year-end.
Xero and better systems can reduce the risk
Late payment interest often starts with poor visibility.
If your records are updated once a quarter, you may not see the problem until the tax deadline is close. If your bookkeeping is updated weekly or monthly, you can spot upcoming VAT, PAYE and tax pressure much earlier.
Working with xero accountants Nottingham can help you improve how transactions are recorded, reconciled and reviewed.
Xero is not a magic fix by itself. It still needs good setup, sensible controls and regular checks.
FHP Accounting’s article on Xero controls explains how permissions and approval workflows can reduce accidental edits in busy teams.
Their guide to Month-End in Xero is also helpful if you want a regular routine for closing procedures, reports and performance tracking.
When an outsourced finance function makes sense
If your business is growing, you may reach a point where tax planning, bookkeeping, payroll, VAT and reporting are too much for one person to manage casually.
That is when outsourced finance services can be useful. Instead of only looking at your numbers once a year, you can get regular reporting, cash flow support and clearer management information.
This matters when HMRC interest rates are high because timing becomes more important. The earlier you know a tax bill is coming, the more options you have.
You can:
- Build tax reserves monthly
- Review upcoming liabilities before deadlines
- Chase customer payments earlier
- Delay non-essential spending where needed
- Speak to HMRC before the position becomes worse
- Prepare more accurate forecasts for directors or lenders
FHP Accounting’s article on Building management reports is useful if you want better financial reports that reflect how your business actually operates.
What to do if you cannot pay HMRC on time
If you know you cannot pay a tax bill on time, do not ignore it. HMRC says you may be able to set up a payment plan to pay in instalments if you cannot pay your tax bill in full. HMRC will check whether the plan is affordable.
A Time to Pay arrangement does not normally stop late payment interest. HMRC guidance confirms that late payment interest continues to accrue on amounts not paid on time, even if they are included in a Time to Pay arrangement.
However, contacting HMRC early can still help. It may reduce the risk of further penalties and show that you are trying to deal with the issue properly.
Before contacting HMRC, it helps to know:
- How much you owe
- Why you cannot pay in full
- What you can afford each month
- When your cash flow is expected to improve
- Whether other tax bills are also due soon
- Whether your returns are filed and up to date
If your records are incomplete, it becomes harder to have that conversation confidently. That is why getting help early matters.
Practical steps to avoid HMRC late payment interest
The best way to avoid late payment interest is to make tax planning part of your monthly routine.
The following steps can help:
- Reconcile your bank accounts regularly
- Review VAT before the deadline
- Estimate Corporation Tax before year-end
- Put tax money aside in a separate bank account
- Check payroll liabilities every month
- Keep rental income and property costs clearly separated
- Review director drawings before taking more money out
- Use cloud software properly, not just as a receipt store
- Chase unpaid invoices before they damage your tax cash flow
- Speak to your accountant if a payment deadline looks difficult
If unpaid invoices are part of the problem, FHP Accounting’s article on Handling arrears and disputes can help you think about credit control, interest and recovery steps.
For construction businesses, Construction Industry Scheme Essentials is also useful because CIS, PAYE and tax deadlines can overlap and create avoidable pressure.
FAQs
What is the current HMRC late payment interest rate?
The current HMRC late payment interest rate is 7.75% from 9 January 2026. The rate is generally linked to the Bank of England base rate plus 4%.
When does HMRC late payment interest start?
It depends on the tax, but VAT late payment interest starts from the first day the payment is overdue and continues until the overdue amount is paid in full. Other taxes also have their own rules, so it is important to check the deadline that applies to your position.
Is HMRC late payment interest the same as a penalty?
No. Interest and penalties are separate. Interest is charged because tax has been paid late. Penalties may apply on top if the payment remains overdue or if the relevant penalty rules apply.
Can a Time to Pay arrangement stop interest?
A Time to Pay arrangement can help you spread the payment, but late payment interest normally continues on amounts not paid on time. It is still better to contact HMRC early rather than letting the debt grow.
How can you avoid HMRC late payment interest?
You can reduce the risk by keeping bookkeeping up to date, estimating tax early, setting money aside regularly and dealing with payment problems before the deadline. Regular financial reporting also makes it easier to spot tax pressure before it becomes urgent.
Can FHP Accounting help with tax payment planning?
Yes. FHP Accounting can help you understand upcoming tax liabilities, improve your bookkeeping, review VAT, prepare company accounts and build better cash flow routines so HMRC deadlines are easier to manage.
Speak to FHP Accounting
Late payment interest is now too expensive to ignore. If you are worried about VAT, Corporation Tax, Self Assessment, property tax, payroll or business cash flow, getting advice early can save stress and reduce avoidable costs.
Speak to FHP Accounting for clear, practical support with bookkeeping, tax planning and financial reporting. Get in touch through the contact page and take control before the next HMRC deadline arrives.
I lead FHP Accounting, an accountancy practice specialising in Commercial and Residential Property Accounting. Our goal is to make the administration of running property portfolios easier for landlords, managers, and investors — allowing you to focus on what you do best, while we take care of everything behind the scenes.
