Udhaar & byaj calculator
Lent money to someone, or borrowed it? Enter the amount, the rate the way you agreed it (for example 2 rupaye sainkda), the dates and any repayments, and see the interest and what is still due.
- Enter both dates.
Lending money as a business can need a licence under state money-lending laws, and some states limit the interest that can be charged. For loans between family and friends this is only a calculator.
For working out interest from the figures you enter. It is not legal or financial advice, and what you and the other person agreed is what applies.
Related tools
Keep every udhaar in one place, seen by both sides — try AQVIK.
How it's calculated
Rupaye sainkda is interest per ₹100 per month, so the yearly rate is that figure × 12 (2 rupaye sainkda = 24% a year). ₹ per ₹1,000 per month × 1.2 gives the yearly %.
Months + days: interest = amount × yearly rate ÷ 100 × (whole months + leftover days ÷ 30) ÷ 12. Exact days: interest = amount × yearly rate ÷ 100 × days ÷ 365.
Byaj par byaj: on each chosen date (every year, 6 months or month from the date given), unpaid interest is added to the amount and earns interest from then on.
On a repayment date, the interest up to that day is worked out first; the repayment clears it, and the rest reduces the amount.
Each period's interest is rounded to the paisa when it is added, so every line of the hisaab adds up.
Questions
What does "2 rupaye sainkda" mean?
It means ₹2 of interest on every ₹100 for each month. On ₹50,000 that is ₹1,000 a month, and over a year it works out to 24%, far more than most bank loans.
What is byaj par byaj?
Compound interest: unpaid interest is added to the amount lent at set times, usually once a year, and then earns interest too. On ₹50,000 at 2 rupaye sainkda, two years of simple interest is ₹24,000, and with yearly byaj par byaj it is ₹26,880.
How are repayments in between counted?
On the date of a repayment, the interest due up to that day is worked out first. The repayment clears that interest, and whatever is left reduces the amount lent, so interest after that is on the smaller amount.
Why do "months + days" and "exact days" give different answers?
Months + days treats every month as equal and counts leftover days as a share of 30, which is the usual way for udhaar. Exact days divides the actual number of days by 365. Use the way you agreed.