Fortnightly Bill Calculator
What to set aside each payday
Paid fortnightly but your bills come monthly, quarterly or yearly? Enter them once and see exactly what to put aside every payday, and what's left to spend.
1. Your take-home pay
2. Your bills
Example bills shown. Replace them with yours.
3. Your fortnight
Bucket method split of what's left (change it any time):
Averages don't tell you which pay covers which bill.
This calculator gives you the average per fortnight. Payday Planner AU (Excel & Google Sheets) goes further, every payday:
- Payday Calendar: which pay covers which bill, all year
- Tight-fortnight alerts before a lumpy bill hits, and the 3-pay months
- Safe to spend now: one number until next payday
- Bank CSV import: presets for major Aussie banks, or set up any bank once
Launching soon on Payhip.
A$14.95 one-off · instant download · no bank login, no subscription
How the maths works
Why not just divide monthly bills by 2?
Because a year has 26 fortnights, not 24. A monthly bill costs 12 ÷ 26 of its amount each fortnight (about 46%), not 50%. Dividing by 2 over-saves early and leaves you short later.
Conversions used
Weekly × 2 · Fortnightly × 1 · Monthly × 12 ÷ 26 · Quarterly × 4 ÷ 26 · Yearly ÷ 26.
Is my data saved?
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General budgeting information only, not financial advice. Amounts are estimates based on what you enter. © Payday Planner AU.