Months
(retirement age - age) x 12
Lost Income Calculator — Leibniz and Hoffman Methods
Estimate lost future income from monthly income, age, working end age, disability rate, and present-value coefficient method.
Lost Income Calculator
Present-value estimate using Leibniz or Hoffman coefficients.
Estimated lost income
111,768,970 KRW
- Working months
- 360
- Coefficient
- 186.2816
- Monthly loss
- 600,000 KRW
Korean legal-damage estimate only. Disability rate, working period, and court practice can change the result.
Lost income converts future monthly loss to present value
As in ahoxy, the tool uses a 5% annual rate divided monthly and accumulates Leibniz or Hoffman coefficients. Monthly loss equals income times loss rate.
Formula
Leibniz
sum 1 / (1 + r)^k
Hoffman
sum 1 / (1 + k*r), cap 240
How to use
- Adjust the inputs to match your situation.
- Read the result together with the formula cards.
- Confirm official figures with the relevant authority before acting.
Frequently asked questions
What does this calculator estimate?
As in ahoxy, the tool uses a 5% annual rate divided monthly and accumulates Leibniz or Hoffman coefficients. Monthly loss equals income times loss rate.
Is the result official?
This calculator is a general estimate for learning and planning. Confirm official legal, tax, finance, or institutional figures before acting.
What logic is used?
As in ahoxy, the tool uses a 5% annual rate divided monthly and accumulates Leibniz or Hoffman coefficients. Monthly loss equals income times loss rate.
This calculator is a general estimate for learning and planning. Confirm official legal, tax, finance, or institutional figures before acting.