Pro Rata Guides

Practical guides for splitting bills, rent, salaries, and refunds in proportion

Eighteen short guides on where pro rata shows up in everyday money decisions. Each one shows the formula with real numbers, and links to the free calculator so you can run your own split.

What does "pro rata" mean?

The plain-English version, with everyday examples from rent to refunds.

How to calculate pro rata

The formula, three worked examples, and the rounding trap that catches people splitting money.

Pro rata salary explained

Part-time roles and mid-month starts, with numbers.

How to split rent pro rata

Days occupied, room size, and combined splits for move-in dates.

Splitting utility bills pro rata

Electricity, water, and internet: which bills to split by days and which to split equally.

How pro rata bonuses work

Mid-year hires and part-timers: how your bonus gets scaled, with examples.

Pro rata vacation days

PTO for new hires: monthly vs daily accrual, and rounding rules.

Pro rata refunds

What you get back when you cancel early, and when refunds are not pro rata.

Pro rata insurance premiums

Partial-year coverage pricing, and pro rata vs short rate cancellation.

Pro rata dividends

What your share actually earns, preference shares, and capital calls.

Prorated property tax

Who owes what when a home changes hands, with escrow math.

Pro rata commission

Split a commission on a partial deal, with a worked example.

Pro rata billing

Why your first SaaS invoice is small, and the renewal math.

Pro rata membership fees

Joining mid-month: the gym and club fee math.

Pro rata interest

Daily and monthly interest, 360-day vs 365-day.

Prorated rent calculator

Mid-month move-in math: the three day-count conventions and what your lease means.

Prorated PTO payout

What you get paid for unused vacation when you leave, and the state-by-state split.

Prorated final paycheck

How your last salary is calculated when you quit mid-month, plus state deadlines.

Ready to split something? Open the calculator and enter the total with each share. Free, no signup.