Prorated rent calculator: rent for a part month when someone moves in or out
By Giridhar Reddy, founder of Domvio, Bengaluru
Updated
To prorate rent, divide the monthly rent by the days in that month and multiply by the days the tenant stays. A tenant paying ₹12,000 who moves in on 20 December stays 12 of 31 days, so the rent is ₹12,000 ÷ 31 × 12 = ₹4,645. Some owners use 30 days for every month, which gives ₹4,800.
Prorated rent calculator
Enter the monthly rent and the move-in date, the last day of stay, or both. The calculator shows the rent by actual days and on a 30-day basis, with the working, and writes a WhatsApp message you can copy.
This calculator needs JavaScript. To work it out by hand: part rent = monthly rent ÷ days in the month × days stayed, counting the move-in day and the last day of stay. For ₹12,000 from 20 to 31 December: 12,000 ÷ 31 × 12 = ₹4,645. On a 30-day basis: 12,000 ÷ 30 × 12 = ₹4,800.
A free tool, not legal advice
No Indian law sets how part-month rent is worked out. Your rent agreement or PG house rules decide it, so write the method in. Nothing you type leaves your phone or computer.
How do you calculate prorated rent?
Count the days stayed
Count the move-in day and the last day of stay. Moving in on the 20th of a 31-day month is 12 days (20th to 31st). Leaving after the night of the 10th is 10 days (1st to 10th).
Find the daily rent
Divide the monthly rent by the days in that month (28 to 31), or by 30 if your agreement uses a 30-day month.
Multiply and round
Daily rent × days stayed, rounded to the nearest rupee. From the next month, the full rent applies.
| Situation | Days stayed | By actual days | 30-day basis |
|---|---|---|---|
| ₹12,000 flat, moves in 20 December (31 days) | 12 | ₹12,000 ÷ 31 × 12 = ₹4,645 | ₹12,000 ÷ 30 × 12 = ₹4,800 |
| ₹12,000 flat, last day of stay 10 January (31 days) | 10 | ₹3,871 | ₹4,000 |
| ₹9,000 PG bed, moves in 18 November (30 days) | 13 | ₹3,900 | ₹3,900 |
| ₹12,000 flat, moves in 15 February 2027 (28 days) | 14 | ₹6,000 | ₹5,600 |
The two methods give the same answer only in 30-day months. In a 31-day month the 30-day basis charges a little more per day; in February it charges less. Over a year the differences are small, so pick one method and use it every time.
Actual days or a 30-day month: which should you use?
- Actual days is the fairest: each day of December costs the same as each other day of December. It is easy to explain on WhatsApp because the working matches the calendar.
- A 30-day basis keeps the daily rate the same all year (₹400 a day on ₹12,000), which is simpler for PGs with many move-ins. A stay covering the whole month is still the full rent.
- Whichever you choose, write it down. Put one line in your rent agreement or PG rental agreement: "Rent for a part month is charged by the number of days stayed, counting the move-in and move-out days, at the monthly rent ÷ the days in that month."
Clause for the agreement or house rules (copy and edit)
Part-month rent: If the tenant moves in or out on a day other than the first or last day of a month, rent for that month is charged for the days stayed, counting the move-in day and the last day of stay, at the monthly rent divided by [the number of days in that month / 30]. Rent is rounded to the nearest rupee.
Part-month rent for PG residents
PG beds change hands mid-month more often than flats. Two habits keep the first and last month free of arguments:
- At move-in, charge the part month and the deposit together, then move the resident onto the same due date as everyone else from the next month. A copy of the working on WhatsApp saves a second conversation.
- At move-out, the notice period decides the last day of stay, and the part-month rent goes into the full-and-final settlement with the electricity share. See the PG notice period and move-out checklist and the PG electricity bill calculator, which also splits by days present.
- If a resident leaves without serving notice, rent for the unserved notice days is a separate charge, and only if your house rules say so. Do not mix it into the part-month rent.
After the first month, reminders go out on their own
Domvio sends each tenant or PG resident a WhatsApp reminder three days before rent is due, with the exact amount and a UPI link to your own account, and a PDF receipt for every confirmed payment. It is free during early access. Domvio does not prorate rent for you, so send the part-month amount yourself. See the rent collection app or PG management software.
From the first full month, Domvio sends your tenant a WhatsApp reminder three days before rent is due, with a UPI link to your own account. Free during early access.
Try Domvio freeFrequently asked questions
How do I calculate rent for a partial month?
Divide the monthly rent by the days in that month and multiply by the days stayed, counting the move-in and last days. ₹12,000 for 12 days of December is 12,000 ÷ 31 × 12 = ₹4,645.
Should prorated rent use 30 days or the actual days in the month?
Either is fine if your agreement says which. Actual days matches the calendar; a 30-day basis keeps the daily rate the same all year. They give the same answer in 30-day months.
Is the move-in day counted for rent?
Usually yes: the tenant has the home from that day. The last day of stay is usually counted too. Say so in your agreement so nobody argues about one day.
Do I charge prorated rent if a PG resident leaves mid-month?
Charge rent up to the last day of stay, as your house rules set out. Whether unserved notice days are charged as well is a separate rule. Put both in the full-and-final settlement.
Does Domvio calculate part-month rent?
No. Use this free calculator for the first or last month. Domvio sends WhatsApp reminders for the regular monthly rent with a UPI link, and a PDF receipt for every confirmed payment.
Stop chasing rent every month
Domvio reminds your tenants on WhatsApp, takes rent straight to your UPI ID and sends PDF receipts automatically. Free during early access.