Student Loan Plan Types: Which One You're On, and Why It Changes What You Repay

Why the plan type matters more than people realise

Most explanations of student loan repayment focus on the mechanics of the deduction: a percentage taken above a threshold once you start earning. But two people on identical salaries can have very different repayment experiences depending on which plan type their loan falls under. The plan type is set by when and where you studied, and it determines the repayment threshold, the interest rate charged, and the point at which any remaining balance is wiped clean. Getting this wrong, or not knowing it at all, can lead to confusion about payslip deductions or missed opportunities to plan ahead.

The different plan types

There are several plan types in England and Wales, plus separate arrangements for Scotland and Northern Ireland, and a distinct system for postgraduate loans.

• Plan 1 generally applies to people who started undergraduate courses before university funding reforms changed the system, and to some Northern Ireland and Scottish borrowers.
• Plan 2 applies to most people who started undergraduate courses in England or Wales from the mid-2010s reform date onwards.
• Plan 4 applies to Scottish students, replacing what would otherwise have been Plan 1 for that group.
• Plan 5 applies to more recent English starters, following a further reform to the system.
• Postgraduate loans (for master’s or doctoral study) run as a separate loan alongside any undergraduate plan, with their own threshold and rate.

Each plan type has its own repayment threshold, meaning the income level above which deductions begin. These thresholds are reviewed and can change, so you should never assume a figure you read somewhere is still current. The Student Loans Company (SLC) and GOV.UK publish the up-to-date thresholds and rates for every plan type.

How your plan type is decided

You do not choose your plan type. It is fixed by the rules in force when you took out the loan, based on where you lived and when your course started. If you have multiple loans, for example an undergraduate loan and a postgraduate loan, you will typically repay both simultaneously, with each calculated against its own threshold. This is why someone can see two separate student loan deductions on a single payslip.

If you are unsure which plan you are on, the safest way to check is through your online account with the Student Loans Company or via GOV.UK’s guidance, rather than guessing from memory or comparing notes with friends who studied in different years.

Interest works differently by plan

Interest accrues on the outstanding balance from the day the loan is taken out, not just after graduation, and the rate depends on the plan type. Some plans link the rate to a measure of inflation, sometimes with an additional margin that can vary depending on income while studying or after leaving the course. Postgraduate loans typically have their own separate interest rules. Because these rates are reviewed periodically, often annually, you should check the current rate for your specific plan on GOV.UK rather than relying on a figure that may be out of date.

This matters because interest can outpace what you repay in some circumstances, particularly for people on lower incomes, meaning the balance can grow even while deductions are being taken from a payslip. This is a normal feature of the system rather than an error.

Write-off dates differ too

Every plan type has a point at which any remaining balance is cancelled, regardless of whether it has been fully repaid. This is usually a fixed number of years after the April you were first due to repay, though the exact period depends on the plan. Because this write-off horizon is baked into the design of each plan, it is one of the clearest reasons the plan type matters: someone on an older plan may see their loan written off many years earlier or later than someone with a newer plan, even if their earnings and balances look similar.

Why this affects financial decisions

Knowing your plan type helps with more than just understanding a payslip. It affects whether voluntary overpayments make sense, since paying off a loan early is not always worthwhile if you are likely to have the balance written off before it is repaid in full. It also matters for mortgage applications, where lenders want to see the actual monthly deduction rather than the total balance, and for anyone weighing up a job with variable income, since deductions are based on income in each pay period rather than an annual figure alone.

Where to check the current details

Because thresholds, interest rates and write-off periods are subject to change and vary by plan, always check your specific plan type and its current terms directly with the Student Loans Company or GOV.UK before making decisions, particularly around overpaying or timing a career move.