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PAYE Period Threshold Calculator

Convert student loan thresholds across different pay frequencies. Understand why deductions vary period-to-period and the impact of pay frequency on your repayments.

Period-Based Calculation Logic

Critical Rule: Each pay period is assessed independently against that period's threshold.

Not Annualized: PAYE doesn't look at your annual income when calculating deductions.

Variable Impact: High earnings in one period = higher deduction that period, regardless of other periods.

Threshold Conversion

Convert annual thresholds to any pay frequency and see the PAYE impact.

Repayment rate: 9.0%

Every week (52 times per year)

£

For future planning or policy changes

£

Current Thresholds

Annual:£28,470
Weekly:£548
Rate:9.0%

Threshold Conversion Table - Plan 2

Pay PeriodPeriods/YearThreshold
WeeklySelected
52£548
Fortnightly
26£1,095
Four-weekly
13£2,190
Monthly
12£2,373
Quarterly
4£7,118
Semi-annually
2£14,235
Annually
1£28,470

HMRC Official: Official thresholds may differ from calculated due to rounding rules

Difference: Positive = borrower-friendly (higher threshold), Negative = higher deduction

Weekly Calculation Example

Calculation Breakdown

Weekly gross pay:£700
Plan 2 threshold:£548
Amount above threshold:£152
UG repayment (9.0%):£13.68
Total repayment:£13.68

Annual Projection

£711
Annual Equivalent
If earning £700 every weekly

Important: This assumes consistent earnings every period. Variable pay will result in different deductions each period.

Variable Pay Impact - Weekly Examples

PeriodGross PayThresholdDeduction
Week 1£400£548£0.00
Week 2£650£548£9.18
Week 3£520£548£0.00
Week 4£700£548£13.68
Total£2,270-£22.86

Key Point: Each period is calculated independently. High pay in one period = high deduction that period, regardless of low pay in other periods.

Pay Frequency Impact Comparison

£
Pay FrequencyGross Per PeriodDeduction Per PeriodAnnual Total
Weekly£673£11.26£585
Monthly£2,917£48.93£587
Quarterly£8,750£146.88£588

Maximum Difference: £2

Explanation: Differences arise from rounding in period-based calculations

Payroll Implementation Guide

Step-by-Step Calculation

  1. Identify employee's pay frequency
  2. Look up period threshold for their plan
  3. Calculate: Gross pay - Period threshold
  4. If positive: Multiply by rate (9% or 6%)
  5. If negative/zero: No deduction
  6. Deduct alongside tax and NI
  7. Report to HMRC via RTI

Key Rules

  • • Each period calculated independently
  • • Use official HMRC thresholds (not calculated)
  • • Round deductions to nearest penny
  • • Apply after tax but before pension
  • • Include in RTI submissions
  • • No annual reconciliation in payroll

Understanding Period-Based PAYE

Why Pay Frequency Matters

  • • PAYE calculates each period independently
  • • Higher pay in one period = higher deduction
  • • Bonuses create spikes in deductions
  • • Variable hours lead to variable deductions
  • • No averaging across periods during year

HMRC Rounding Rules

  • • Official thresholds may differ from calculated
  • • Usually rounded to nearest pound
  • • Sometimes rounded in borrower's favor
  • • Creates small differences in annual totals
  • • Always use official HMRC figures

Practical Implications

For employees:

Understanding period thresholds helps explain why deductions vary with overtime, bonuses, or irregular hours. A £700 weekly payment results in £13.68 deduction.

For employers:

Payroll systems must calculate each period independently using the correct threshold. No annualization or averaging is allowed during the year.

For planning:

High earners should expect significant deductions in bonus periods. The period-based system can't differentiate between regular pay and one-off payments.

Need More Student Loan Information?

Understanding period-based calculations is crucial for managing student loan deductions effectively. Get official guidance on thresholds and repayment rules.