Skip to main content
GovMath.

Everyday & Life · Utility

Pro-Rata Rent Calculator

Moving in mid-month? Most landlords charge pro-rata for the partial month, then full rent on the 1st of each month after. This works out how much that first invoice should be.

£
days
days

Pro-rata rent due

£580.65

Daily rate: £48.39

Calculation

  • £1,500.00 ÷ 31 days
    £48
  • × 12 days occupied
    £581

How we calculated your result

Daily rate = monthly rent ÷ days in that month. Multiply by number of days you’ll be in occupation that month.

Official UK rules in simple English

  • Most ASTs use the calendar-day method (rent ÷ days in actual month).
  • Some agents use the annual day method (rent × 12 ÷ 365 × days) — slightly different in 30 vs 31-day months.
  • Always confirm with your AST agreement which method applies.

Common pitfalls to watch out for

  • ⚠ Move-in date or first-night-paid-for?

    Some landlords charge from the day you collect keys; others from the day the previous tenant moved out. Get it in writing.

  • ⚠ Annual-day method makes Feb cheaper

    Using monthly × 12 ÷ 365 means February days cost the same as July days. Calendar method makes Feb days more expensive (rent ÷ 28). Argue for whichever favours you.

Frequently asked questions

What about leap years?
If using annual method, divide by 366 in a leap year.
Does deposit get pro-rated?
No — deposit is a fixed amount regardless of move-in date. Capped at 5 weeks’ rent under Tenant Fees Act 2019.

Calendar-day method shown. Check your tenancy for the agreed approach.

Related calculators

More tools in Everyday & Life.