How to budget when you're paid fortnightly.

Start with the pay cycle you actually live on

If your pay arrives every fortnight, it is reasonable to want a fortnightly view of your commitments. The difficulty is that the rest of your life rarely follows the same calendar. Some expenses happen weekly, while subscriptions, utilities or rent may be monthly.

Remember there are 26 fortnights in a year

A fortnightly budget is not the same as taking a monthly budget and dividing it by two. Twelve months produce 24 half-month periods, while a year actually contains 26 fortnights.

A consistent conversion starts with the annual amount. A $100 monthly subscription is $1,200 per year, which is about $46.15 per fortnight. That is different from the $50 result you get by simply dividing the monthly number by two.

Keep each bill at its real frequency

You do not need to rewrite every expense as a fortnightly bill. Record what really happens, then use a normalised fortnightly view for planning. This keeps the source amount meaningful and the comparison useful.

Use the extra-pay months deliberately

Because 26 fortnights do not divide evenly into 12 months, some calendar months will contain three fortnightly pay days. A recurring budget should not rely on those months to make ordinary commitments affordable, but they are useful to recognise when planning ahead.