Student Loan Glossary
Your complete guide to UK student loan terminology, definitions, and key concepts
Filter by Loan Plan:
Annual Repayment Threshold
The minimum annual income level above which student loan repayments begin. This threshold varies by loan plan and is updated annually in line with inflation or government policy.
APR(Annual Percentage Rate)
The yearly interest rate applied to your student loan balance. For UK student loans, this is typically linked to RPI inflation plus a percentage margin that varies by plan and income.
Balance(Loan Balance)
The total amount you owe on your student loan, including the original borrowed amount plus accumulated interest, minus any repayments made.
Balancing Payment
An additional payment made through Self Assessment if your PAYE deductions during the tax year were insufficient to cover your full student loan repayment obligation.
Bonus Payment
A one-time payment from your employer in addition to regular salary. Student loan repayments are calculated on your total income including bonuses, which may push you into a higher repayment bracket temporarily.
CIS(Construction Industry Scheme)
A tax deduction scheme for contractors in the construction industry. Student loan repayments are deducted at source alongside CIS deductions.
Combined Repayment
When you have multiple student loans (e.g., undergraduate Plan 2 and Postgraduate Loan), you make separate repayments on each based on their respective thresholds and rates.
Compound Interest
Interest charged on both your original loan amount and on previously accumulated interest. UK student loans use compound interest calculated daily.
Deferment
A temporary pause in student loan repayments when your income falls below the repayment threshold or you're studying, unemployed, or on parental leave. Interest continues to accrue during deferment.
Direct Debit
A payment method used for voluntary overpayments to the Student Loans Company. Standard repayments through employment are automatically deducted via PAYE, not Direct Debit.
Dividends
Income from shareholdings that counts toward your total income for student loan repayment calculations when filing Self Assessment, but is not subject to PAYE deductions.
Early Repayment
Making voluntary payments above your automatic deductions to pay off your student loan faster. Consider whether this is financially beneficial given write-off dates and interest rates.
Employed Income
Income from employment (salary, wages, bonuses) that is subject to PAYE deductions, including automatic student loan repayments.
First Repayment Date
Repayments begin in the April after you finish your course or leave university, provided your income exceeds the threshold for your plan type.
Full-Time Study
Students studying full-time do not make student loan repayments during their studies, regardless of any part-time work income. Interest accrues from the first payment.
Grace Period
The period between finishing your studies and when repayments begin. For UK student loans, this is until the April following graduation.
Gross Income
Your total income before any deductions (tax, National Insurance, pension contributions). Student loan repayments are calculated on gross income minus certain allowable deductions.
Graduation Year
The year you complete your course, which determines when your write-off period begins counting and affects which repayment plan applies to you.
Higher Rate Interest
For Plan 2 loans, interest rises progressively as income climbs from the lower band (£29,385) to the upper band (£52,885). At or below £29,385 the rate is RPI (4.1%); at £52,885 or more the rate would be RPI + 3% (7.1%), but since 1 September 2026 a 6% cap applies, so 6% is the maximum rate actually charged. Both bands are frozen from April 2027 to April 2030.
HMRC(HM Revenue & Customs)
The UK tax authority responsible for collecting student loan repayments through PAYE and Self Assessment, then forwarding them to the Student Loans Company.
Income-Contingent Repayment
The UK student loan system where repayments are based on your income level rather than your loan balance. You only repay when earning above the threshold, and amounts adjust with income changes.
Inflation
The rate at which prices increase over time. Student loan interest rates and repayment thresholds are typically linked to inflation measures (RPI or CPI).
Interest-Free Period
Some student loan plans (Plan 1, Plan 4) charge interest equal to or close to inflation, effectively making the real interest rate zero or minimal.
Interest Rate
The percentage charged on your outstanding loan balance. Rates vary by plan: Plan 1 and Plan 4 use RPI or the Bank of England base rate + 1%, whichever is lower (4.1%); Plan 2 uses RPI + 0-3% depending on income (4.1% to 7.1% before the cap); Plan 5 uses RPI only with no margin (4.1%); the Postgraduate Loan uses RPI + 3% (7.1% before the cap). Since 1 September 2026 a 6% cap applies to Plan 2 and Postgraduate loans in England and Wales, so the highest rate either plan actually charges today is 6%.
IR35
Tax legislation affecting contractors working through intermediaries (personal service companies). If inside IR35, you're treated as an employee for tax purposes, including student loan deductions.
Loan Book
The collective term for all student loans held and managed by the Student Loans Company or the government.
Lump Sum Repayment
A one-time larger payment made to reduce or pay off your student loan balance. Can be made at any time without penalty.
LLE(Lifelong Learning Entitlement)
A new flexible funding system launching January 2027 that provides £38,140 (equivalent to 4 years of funding) across a lifetime for higher education and skills training. Allows modular study, breaks between learning, and covers both tuition and maintenance. Repaid under Plan 5 terms with a £25,000 threshold. Applications open September 2026.
Maintenance Loan
Money borrowed to cover living costs while studying (accommodation, food, bills, course materials). The amount depends on household income, location, and whether living at home.
Marginal Tax Rate
The combined percentage of additional income paid in tax, National Insurance, and student loan repayments. Can reach 42-51% for higher earners with student loans.
Maternity/Paternity Leave
Periods of reduced income due to parental leave. Statutory maternity pay (£194.32 a week in 2026-27 after the first six weeks) is well below every repayment threshold, so deductions pause automatically.
Monthly Threshold
The monthly equivalent of the annual repayment threshold, used by employers to calculate PAYE deductions. For Plan 2 in 2026-27 it is £2,448 per month.
Multiple Jobs
When working multiple jobs simultaneously, each employer deducts student loan repayments separately based on your earnings with them, potentially causing overpayment if combined income is miscalculated.
National Insurance(NI)
A tax on earnings separate from income tax. Like student loan repayments, NI is deducted through PAYE and has its own threshold and rates.
Negative Amortization
When your repayments don't cover the interest accruing on your loan, causing your balance to grow despite making payments. Common for lower earners on Plan 2.
Overseas Repayment
If you move abroad, you must inform SLC and continue making repayments based on equivalent local thresholds. Failure to do so can result in penalties and interest charges.
Overpayment
Either: (1) Voluntary extra payments beyond automatic deductions to reduce your loan faster, or (2) Accidentally paying too much, which can be reclaimed from SLC.
P45
A document from your employer when leaving a job, showing earnings and deductions to date (including student loan repayments). Given to your new employer to ensure correct tax/loan codes.
P60
Annual summary from your employer showing total earnings and deductions (tax, NI, student loans) for the complete tax year. Essential for checking correct loan deductions.
Part-Time Study
Part-time students must make loan repayments while studying if earning above the threshold, unlike full-time students who are exempt during study.
PAYE(Pay As You Earn)
The system where employers automatically deduct income tax, National Insurance, and student loan repayments from your salary before you receive it.
Pensionable Income
Income used to calculate pension contributions. Student loan repayments are calculated on salary after pension contributions (if salary sacrifice), reducing repayment amounts.
Plan 1
Student loan plan for students who started courses before 1 September 2012 in England or Wales, and for all Northern Ireland students. Threshold: £26,900 (2026-27), 9% repayment rate, RPI or Bank of England base rate + 1% interest, whichever is lower (currently 4.1%), 25-year write-off from the first April after the course ends (or age 65 for pre-2006 English borrowers, whichever comes first).
Plan 2
Covers English undergraduates who started between 1 September 2012 and 31 July 2023, and Welsh undergraduates who started on or after 1 September 2012 (Wales did not move to Plan 5). Threshold: £29,385 (2026-27), 9% repayment rate, RPI + 0-3% interest depending on income (4.1% to 7.1% before the cap, capped at 6% since 1 September 2026), 30-year write-off from the first April after the course ends. The threshold is frozen at £29,385 from April 2027 to April 2030.
Plan 4
For Scottish students funded by SAAS. Threshold: £33,795 (2026-27), 9% repayment rate, interest set at RPI or the Bank of England base rate + 1%, whichever is lower (currently 4.1%), 30-year write-off from the first April after the course ends.
Plan 5
Newest plan, England only, for courses starting on or after 1 August 2023. Threshold: £25,000 (2026-27, frozen until April 2027), 9% repayment rate, RPI interest with no margin (currently 4.1%), 40-year write-off from the first April after the course ends. The first Plan 5 repayments became due in April 2026.
Postgraduate Loan
Separate loan for Master's degrees (up to £13,206 for courses starting on or after 1 August 2026) or Doctorates. Also called Plan 3. Threshold: £21,000 (2026-27), 6% repayment rate, RPI + 3% interest (7.1% before the cap), 30-year write-off. Repaid at the same time as any undergraduate loan. Since 1 September 2026 the rate is capped at 6% in England and Wales, so 6% is the rate charged today.
Reconciliation
The process of checking your annual student loan deductions against what you actually owe, typically done through Self Assessment or by contacting HMRC/SLC.
Refund
Money returned if you've overpaid student loans, either within the tax year (PAYE) or after annual reconciliation. Contact SLC to request refunds.
Rental Income
Income from property rentals that must be declared via Self Assessment and counts toward total income for student loan calculations.
Repayment Holiday
Informal term for periods when you don't make repayments because income is below threshold. No action needed - happens automatically.
Repayment Rate
The percentage of income above the threshold that goes toward student loan repayments. Typically 9% for undergraduate loans, 6% for Postgraduate Loans.
Repayment Threshold
The income level below which you make no student loan repayments. Varies by plan type and is usually updated annually.
RPI(Retail Price Index)
A measure of inflation used as the base for most UK student loan interest rates. RPI tracks the change in prices of goods and services over time.
Salary Sacrifice
Arrangement where you give up part of your salary in exchange for benefits (typically pension contributions). Reduces student loan repayments as they're calculated on post-sacrifice income.
Self Assessment
Annual tax return required if you're self-employed, have income from multiple sources, or earn over £100,000. Student loan repayments on non-PAYE income calculated through this process.
Self-Employed Income
Income from self-employment or business profits. Student loan repayments on this income are calculated annually through Self Assessment, not deducted monthly via PAYE.
Side Hustle
Additional income alongside main employment (freelancing, gig work, etc.). Must be declared via Self Assessment if over £1,000, and counts toward total income for student loan calculations.
SLC(Student Loans Company)
Government-owned organization that administers student loans in the UK, processing applications, disbursing funds, and managing repayments.
Statutory Maternity Pay(SMP)
Government-mandated minimum maternity pay: 90% of average weekly earnings for the first six weeks, then £194.32 a week or 90% of average weekly earnings, whichever is lower (2026-27). Usually below repayment thresholds, so student loan deductions pause automatically.
Student Finance
The service that processes student loan applications in each UK nation (Student Finance England, Wales, Scotland, Northern Ireland).
Tax Code
Code used by employers to calculate tax deductions. Student loan plan indicators (1-5) appear after the main tax code (e.g., 1257L SL2 means Plan 2).
Tax Year
Runs from 6th April to 5th April the following year. Student loan thresholds and interest rates are updated annually aligned with the tax year.
Threshold Freeze
When repayment thresholds remain unchanged despite inflation, effectively increasing real repayment amounts. The Plan 2 threshold rose to £29,385 in April 2026 and is then frozen at that level from April 2027 to April 2030 (Autumn Budget 2025). The Plan 5 threshold is frozen at £25,000 until April 2027, after which it is uprated annually.
Tuition Fee Loan
Money borrowed to cover university tuition fees, paid directly to your institution. Maximum £9,790/year for most English undergraduate degrees (2026-27).
Umbrella Company
Intermediary employment company used by contractors. Deducts PAYE tax and student loans like a standard employer, but charges admin fees.
Undergraduate Loan
Loans taken for first degrees (Bachelor's). Includes both tuition fee and maintenance loans, repaid under Plan 1, 2, 4, or 5 depending on circumstances.
Unearned Income
Income not from employment (dividends, rental income, savings interest). Not subject to PAYE deductions but counted in total income for Self Assessment loan calculations.
Variable Income
Income that changes month-to-month (commission, bonuses, hourly wages). Student loan deductions through PAYE adjust automatically, but may require Self Assessment reconciliation.
Voluntary Repayment
Additional payments you choose to make above automatic deductions. Can be made anytime without penalty, but consider whether financially beneficial given write-off dates.
Wage
Payment for work, typically hourly or weekly. Student loan repayments are deducted through PAYE on total wages above the threshold.
Write-Off Date
The date when any remaining student loan balance is cancelled. Timing varies by plan: Plan 1 (25 years), Plan 2 (30 years), Plan 4 (30 years), Plan 5 (40 years), Postgraduate (30 years). Every period runs from the first April after your course ends.
Write-Off Period
The number of years after which your loan is written off if not fully repaid. The period length depends on your loan plan type and when you started studying.