Tax & Accounting

Official rate of interest

By Ali Jaw ·

The official rate of interest is a rate set by HMRC which is used to calculate the benefit in kind tax charge on cheap employment-related loans, and also the amount charged to tax in respect of the provision of employer-financed retirement benefit schemes. Understanding this rate is crucial for both employers and employees, as it directly impacts how much tax you’ll owe. In this guide, we’ll break down what the official rate is, when it applies, and how to calculate any tax liability.

What is the Official Rate of Interest?

The official rate of interest (ORI) is HMRC’s prescribed rate used to determine tax charges on certain benefits provided by employers. It’s not the same as the Bank of England base rate; instead, HMRC sets it independently and updates it periodically. For the 2024/25 tax year, the official rate stands at 7.25% per annum.

This rate applies in several scenarios, most commonly when an employer provides a loan to an employee at a below-market interest rate (or interest-free). Rather than letting employees benefit from cheap borrowing without tax consequences, HMRC assumes a notional interest charge based on the ORI. This notional amount is then treated as a taxable benefit.

It’s worth noting that the ORI has fluctuated considerably over recent years. In 2022/23 it was 2.25%, rising to 5.25% in 2023/24, and now 7.25%. These changes can significantly affect the tax position of employees with outstanding loans, so it’s important to review arrangements regularly.

When Does the Official Rate Apply?

The most common application is cheap employment loans. If your employer lends you money at an interest rate lower than the ORI, you’ll have a taxable benefit. For example, if your employer provides a £50,000 interest-free loan, and the ORI is 7.25%, you’d normally be assessed on a notional benefit of £3,625 per annum.

However, there’s an important exemption: loans below £10,000 are typically exempt from this charge. This means if your employer provides a loan of £10,000 or less, no benefit in kind arises, regardless of the interest rate charged. This is a valuable threshold to be aware of.

The ORI also applies to tax-exempt benefits financed through employer-provided schemes, such as certain retirement benefit arrangements. Additionally, it’s used in calculating interest on overdue tax and benefits on certain company car arrangements, though these have become less common following recent tax changes.

Calculating Your Tax Liability

Working out the benefit is straightforward. Take the loan amount, multiply it by the ORI, and the result is your taxable benefit for the year.

Example:

  • Loan amount: £30,000
  • Official rate of interest: 7.25%
  • Taxable benefit: £30,000 × 7.25% = £2,175

This benefit is added to your employment income and taxed at your marginal rate. For a basic-rate taxpayer, this would result in a tax charge of approximately £435. For a higher-rate taxpayer, it would be around £870.

If you’re subject to this charge, it will normally be collected through PAYE adjustment, or you may need to declare it on your Self Assessment tax return if you’re self-employed or have other taxable income.

What About Part-Year Loans?

If you took out a loan partway through the tax year or repaid it early, you can claim relief for the period it wasn’t outstanding. HMRC provides detailed guidance on apportioning the benefit across months. This is particularly relevant for seasonal workers or those settling short-term borrowing arrangements.

Keep records of when loans were advanced and repaid, as you may be able to reduce your tax charge proportionately.

Planning Ahead

Given the increased ORI, employers and employees should review existing loan arrangements. Some may wish to formalise interest payments at the ORI to eliminate the benefit charge altogether. Others might consider alternative arrangements for providing employee benefits.

For employers, it’s also important to ensure loan agreements are properly documented. HMRC expects formal terms setting out the loan amount, repayment schedule, and interest rate. Informal arrangements can attract additional scrutiny.

Final Thoughts

The official rate of interest may seem technical, but its implications for your tax position are very real. Whether you’re an employee with an outstanding company loan or an employer considering lending to staff, understanding how the ORI works is essential to managing your tax affairs effectively.

For tailored advice, contact Severn Accounting — we’re here to help.