Student loan calculator

During the deferral you do not repay the loan yet. Interest is added to the debt, or you pay it each month.

Student loan calculator

%
years
After the deferral.
months
Months with no repayment, for example during studies.
During the deferral

Result

219.33Each month after the deferral

Interest of the deferral
1,662.86
Debt at the end of the deferral
21,662.86
Total interest cost
6,319.11
Total paid
26,319.11

Year by year

Detailed table
YearPrincipal repaidInterest paidLeft to pay
11,798.12833.7919,864.73
23,669.511,594.3117,993.35
35,617.132,278.6016,045.73
47,644.112,883.5414,018.75
59,753.673,405.8911,909.19
611,949.173,842.309,713.69
714,234.124,189.257,428.74
816,612.174,443.125,050.69
919,087.104,600.102,575.76
1021,662.864,656.250.00

How it is calculated

  1. Interest added: debt after deferral = P × (1 + i)^d, where i = rate ÷ 12 and d = deferral months.
  2. Interest paid: you pay P × i each month during the deferral.
  3. Then payment = debt × i ÷ (1 − (1 + i)^−n).

Example

20,000 at 4%, 24-month deferral with interest added: the debt grows to about 21,662, then about 219.32 a month over 10 years.

Good to know

  • Public aid and income-driven repayment depend on the country and are not counted.
  • Fixed rate, no insurance or fees.
  • An estimate: only the contract counts.

Frequently asked questions

What is this tool used for?

During the deferral you do not repay the loan yet. Interest is added to the debt, or you pay it each month.

How is the result calculated?

Interest added: debt after deferral = P × (1 + i)^d, where i = rate ÷ 12 and d = deferral months.

What should I check before using the result?

Public aid and income-driven repayment depend on the country and are not counted.

Updated October 10, 2026

Indicative result. For an important decision, check with a professional.