Add together all of your undergraduate and postgraduate loan balances to see your total outstanding student debt, a blended interest rate, and how much interest is added each year.
This tool focuses on loan balances and interest only. For monthly PAYE deductions, use the Combined Repayment Calculator.
Approx. interest 1.5% per year (adjust if needed)
Approx. interest 4.5% per year (adjust if needed)
Approx. interest 1.5% per year (adjust if needed)
Approx. interest 7.5% per year (adjust if needed)
Approx. interest 5.5% per year (adjust if needed)
Total outstanding student loan balance
£50,000
This adds together all plans you've ticked above.
Blended interest rate
4.7%
Weighted by each plan's share of your total balance.
Interest added per year (approx.)
£2,370
Before any repayments you make through PAYE or Self Assessment.
How to use this with other calculators
Student loan repayments in the UK are based on your income, not your balance. But understanding your total debt and the blended interest rate can still be helpful for long‑term planning, especially when you're comparing student loans to other financial goals like saving for a house deposit or investing.
This calculator gives you a clear snapshot of how large your combined balance is, roughly how much interest is being added each year, and how expensive your loans are compared to alternatives. You can then take that information into our other tools to explore different strategies.
See how much is deducted from your salary each month across all plans.
Project lifetime repayments and whether your loans are likely to be written off.
Check if making voluntary overpayments is likely to save you money.
Not necessarily. For most borrowers, student loans behave more like a time‑limited graduate tax: you repay a percentage of income above the threshold for a fixed number of years, and any remaining balance is written off. A higher balance doesn't always mean you will repay more in total, especially on Plan 2 and Plan 5.
The blended rate tells you the average interest across all your loans, weighted by balance size. It's useful when comparing student loans to other decisions like overpaying your mortgage, investing, or increasing pension contributions. In many cases, especially for Plan 2 and Plan 5, the effective cost of the loan can still be low even if the nominal interest rate looks high.
Use this calculator when you want a big‑picture view of your balances and interest. Use the Combined Repayment Calculator to model how much will actually be deducted from your pay each month based on your income.
The default percentages are reasonable approximations based on recent policy, but real rates can change with inflation and government rules. If you know your current rate from the Student Loans Company, you can override the defaults for a more tailored view.