England’s Plan 5 student loan has reached payroll. The balance does not set the deduction

A student-loan balance can be large enough to dominate an online account. It does not dominate the payroll formula. For England's Plan 5, the compulsory deduction on a payslip is driven by pay above a threshold, after the borrower has reached the date when repayments can begin.

That distinction matters now because Plan 5 has entered the payroll system. The Student Loans Company says April 2026 was the earliest possible start for these repayments. It was not a universal start date for everyone who has a Plan 5 loan.

GOV.UK says the earliest repayment point is the April after a borrower finishes or leaves a course. Plan 5 borrowers were not expected to repay before April 2026 even if they left early. A borrower also needs income above the relevant threshold before a compulsory repayment is due. Passing one date on the calendar is therefore only one part of the test.

Plan names are easy to mistake for a sequence that applies to everyone. They are actually tied to where student finance came from, when a course began and what kind of course it was.

For Student Finance England, Plan 5 generally covers undergraduate courses, PGCE courses and Advanced Learner Loans started on or after 1 August 2023. The new Lifelong Learning Entitlement also points to Plan 5. A postgraduate master's or doctoral loan remains on the separate Postgraduate Loan plan.

Borrowers funded in Wales, Scotland and Northern Ireland can be on different plans. An older English loan can also sit on Plan 1 or Plan 2. A person cannot choose the plan. GOV.UK says an online student-loan account can provide an active plan type letter when the code needs to be checked.

This is not administrative trivia. Each plan has its own threshold. HM Revenue and Customs also added a Plan 5 default to employer payroll guidance from April 2026 for cases where an employee with an older plan cannot identify the correct code. A temporary code and the final plan are not necessarily the same thing.

For the 2026 to 2027 tax year, the Plan 5 threshold is £25,000 a year, £2,083 a month or £480 a week in GOV.UK's rounded consumer table. The deduction is 9% of income above the threshold for the relevant pay period, not 9% of the whole salary.

The Student Loans Company gives a simple illustration. At annual pay of £28,000, shown as £2,333 a month, its approximate Plan 5 deduction is £22 a month. The example is a demonstration of the formula, not a forecast for every payslip. Bonuses, overtime, pay frequency and changes in income can alter what crosses a weekly or monthly threshold.

The amount owed does not enter that calculation. GOV.UK states that the total borrowed plus interest has no impact on how much is repaid each year under the normal income-based formula. Two borrowers on the same plan with the same relevant pay can therefore have the same compulsory deduction even if their outstanding balances are very different.

That does not make the balance imaginary or unimportant. Interest is added to it. At the time of publication, GOV.UK listed the Plan 5 rate as 3.2%, and Student Loans Company guidance says the rate is normally based on the Retail Price Index. The rate can change, and a market-rate cap can apply in some periods.

The clearest way to read Plan 5 is to keep two records apart. Payroll answers whether a compulsory deduction is due in this pay period and how much it is. The student-loan account records the outstanding amount, interest and repayments applied over time.

The separation also explains why an extra voluntary payment does not replace a normal payroll deduction. GOV.UK says voluntary payments are additional, do not change the income-based amount collected through payroll or Self Assessment, and generally cannot be refunded. Its guidance also warns that an extra payment might not benefit a borrower because an unpaid remainder can eventually be written off.

For Plan 5, GOV.UK says write-off normally occurs 40 years after the April when repayment was first due. Whether an extra payment makes financial sense is therefore an individual calculation involving future income, the balance, interest, other priorities and uncertainty. It cannot be inferred from a dramatic balance figure alone.

The system has one more boundary worth keeping clear. Student loans do not appear on credit reports and do not affect a credit score, according to GOV.UK. Lenders can still consider the recurring repayment during an affordability assessment for other borrowing, such as a mortgage. A deduction can matter to monthly cash flow without behaving like a conventional missed-payment entry on a credit file.

Plan 5 is now operational, but the useful question is not simply, “How much do I owe?” It is a sequence: which plan applies, has the repayment start date arrived, what pay crossed that plan's threshold, and does the payslip use the right code? The balance remains on the account. The threshold is what reaches the payroll gate.