Student Finance UK: Calculating Your Monthly Repayments

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Understanding how student loan repayments work in the UK can feel confusing, especially when you are trying to work out how much will actually come out of your salary each month. The good news is that the basic calculation is fairly straightforward once you know your repayment plan, your income and the threshold that applies to you. The important thing to remember is that your monthly student loan repayment is generally based on how much you earn above your relevant threshold, rather than simply being a fixed payment based on the size of your outstanding balance.

For the 2026 to 2027 tax year, the repayment thresholds are different depending on the type of student loan you have. Plan 1 has a yearly threshold of £26,900, Plan 2 has a threshold of £29,385, Plan 4 has a threshold of £33,795 and Plan 5 has a threshold of £25,000. Postgraduate Loans have a £21,000 threshold. Plan 1, Plan 2, Plan 4 and Plan 5 repayments are generally calculated at 9% of earnings above the applicable threshold, while Postgraduate Loan repayments are calculated at 6% above the threshold.

This means that your first step should always be finding out which repayment plan you are on. You cannot simply choose a plan yourself because your plan is determined by factors such as when you started your course and what type of finance you received. If you are unsure, you can sign in to your online student loan account to check your repayment plan.

Once you know your plan, the calculation becomes much easier. Imagine that you are on Plan 2 and earn £33,000 a year. The current Plan 2 annual threshold is £29,385, so only the income above that threshold is used for the repayment calculation. The difference is £3,615, and 9% of that amount is £325.35 for the year. Dividing that across twelve months gives an approximate average of £27.11 per month. Your actual payroll deduction can be affected by the way your income is processed, so a calculator should be treated as an estimate rather than a replacement for your payslip.

The same principle applies to other plans. Someone on Plan 1 earning £33,000 would have a different calculation because the Plan 1 threshold is lower. The official government example shows that someone earning £33,000 on Plan 1 and being paid £2,750 each month would have £509 above the monthly threshold, resulting in a calculated repayment of £45.81 before payroll rounding.

This is why simply looking at your annual salary is not enough when you want to understand your student loan deduction. You need to know your plan as well. Two people earning the same amount can have different deductions because their repayment thresholds are different.

Your student loan balance is also not what determines the amount deducted from your salary each month. This is one of the biggest misunderstandings people have about UK student finance. The government explains that the amount you owe, including what you borrowed and applicable interest, does not determine how much you repay each year. Instead, the repayment is based on your income above the threshold for your plan.

That can seem strange when you first look at your account. You might see a balance of many thousands of pounds and wonder why your monthly repayment is comparatively small. The reason is that student loan repayments are linked to earnings rather than being calculated by dividing your outstanding balance into fixed monthly instalments.

If you are trying to check my student loan balance, the official Student Loans Company online account is the best place to start. The account lets you check your current balance, see how much you have repaid, view interest that has been applied, check your repayment plan and manage other account information.

Checking your balance and calculating your monthly repayment are therefore two separate tasks. Your account tells you what is outstanding, while your income and repayment plan determine what you are normally expected to repay from your earnings. Keeping those two ideas separate makes the whole system much easier to understand.

Your income can also change during the year. If you receive overtime, a bonus or another increase in earnings, you may have a student loan deduction in a particular pay period even if your overall annual income eventually turns out to be below the yearly threshold. The government explains that repayments can be triggered when income goes above the relevant weekly or monthly threshold, with refund arrangements available in certain circumstances when annual income is below the yearly threshold.

This is particularly useful to remember if your salary is not consistent. Someone with a regular monthly salary may see a relatively predictable deduction, while someone who works overtime or receives occasional bonuses can see the amount change between payslips.

Your monthly threshold is effectively calculated from the annual threshold, although payroll systems use specific periodic calculations. For 2026 to 2027, the monthly thresholds are approximately £2,241 for Plan 1, £2,448 for Plan 2, £2,816 for Plan 4, £2,083 for Plan 5 and £1,750 for a Postgraduate Loan. The relevant repayment percentage is then applied to earnings above the applicable monthly threshold.

For example, a Plan 5 borrower earning £2,500 in a particular month would have income above the £2,083 monthly threshold. The amount above the threshold would be around £417, and 9% of that is approximately £37.53. Payroll calculations can involve rounding, so the final deduction may differ slightly from a simple calculator result.

Postgraduate Loans work slightly differently because the repayment rate is 6% rather than 9%. For 2026 to 2027, the postgraduate threshold is £21,000 per year, equivalent to £1,750 per month. Someone earning £2,500 in a month would therefore have approximately £750 above the monthly threshold, and 6% of that would be around £45.

Some borrowers have more than one type of student loan. This can make calculations slightly more complicated, but it does not simply mean that you automatically pay 9% twice on the same income. The government explains how multiple plan types interact, including situations involving Plan 1 and Plan 2 or Plan 2 and a Postgraduate Loan. For example, a borrower with Plan 2 and a Postgraduate Loan can potentially make repayments toward both when their income is above both applicable thresholds.

This is another reason why online calculators can be useful. They allow you to experiment with different salaries and repayment plans so that you can get a better understanding of what your deductions might look like. However, you should always compare an estimate with your actual payslip and official student loan account.

Your payslip is particularly useful because it shows what your employer has actually deducted. If the amount seems unexpectedly high or low, check which repayment plan your employer has recorded. The government advises that employers need the correct plan information so that the appropriate deduction can be made.

If you change jobs, your student loan repayment should generally continue through payroll if your new employer has the necessary information. Keeping your student finance information up to date is important because the Student Loans Company uses your account to manage repayment information and communicate with you.

Self-employed borrowers can have a different experience because repayments can be handled through Self Assessment. If you have employment income as well as self-employment income, the calculation can become more complicated. In that situation, it is worth checking the official guidance that applies to your circumstances rather than relying on a basic monthly salary calculator.

The same applies if you move abroad. Borrowers who leave the UK for more than three months need to update their employment details with the Student Loans Company. Overseas repayment thresholds can be different depending on the country where you live, so a UK monthly calculator may not accurately represent what you will be required to pay while overseas.

Another important point is that repayment thresholds can change. The figures used for 2026 to 2027 are current government figures, but older articles and calculators may still show previous thresholds. For example, the previous Plan 2 threshold for 2025 to 2026 was £28,470, whereas the threshold from April 2026 is £29,385.

This is why you should always check the date attached to a student finance calculation. A calculator using an old threshold could give you an answer that looks convincing but is no longer accurate for the current tax year.

Interest is another part of the student loan picture, although it does not directly determine your monthly income-based deduction. Interest can change the outstanding balance shown in your account, while your repayment is still calculated using the applicable income threshold and repayment rate. This explains why your balance can sometimes increase even while repayments are being made.

If you are close to clearing your student loan, keeping an eye on the balance becomes especially important. The government advises that borrowers nearing full repayment may be able to use Direct Debit for final payments, helping prevent an employer from continuing to deduct money after the loan has been fully repaid.

For someone trying to check my student loan balance, the official online account is much more useful than relying on an estimated calculation. You can see your current balance, repayment history, interest information and repayment plan in one place. The service also allows you to manage certain repayment-related tasks and update relevant account details.

The biggest takeaway is that calculating your monthly student loan repayment is mainly about understanding the relationship between your income and your repayment plan. Start with your gross earnings, identify your applicable threshold, calculate the amount above that threshold and apply the relevant repayment percentage. For most undergraduate plans in 2026 to 2027, that percentage is 9%, while Postgraduate Loans use 6%.

It is also worth remembering that the figures are designed for planning rather than replacing official payroll information. Your actual deduction may be affected by how frequently you are paid, how your earnings are processed and whether you have multiple loan types. Your payslip and Student Loans Company account should therefore be treated as the final sources for what has actually happened.

Ultimately, student finance can seem complicated because there are different repayment plans, changing thresholds and different circumstances for employed, self-employed and overseas borrowers. Once you understand that repayments are based primarily on income above a threshold, however, the calculation becomes much easier to follow.

If you want to plan your finances, use your current salary and repayment plan to estimate what could be deducted each month. If you want to know exactly what you owe, check your official Student Loans Company account. And if you notice something unusual, compare your payslip, repayment plan and account information before assuming that your repayment has been calculated incorrectly. Keeping those details up to date is the simplest way to stay on top of your student finance and understand where your money is going.