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Statutory default interest rate under the Civil Act

5% per year% per year

The starting point for late interest on a deposit, and half of a pair that is routinely collapsed into one number. This rate runs from when the debtor actually falls into default; the higher litigation rate runs from a different event entirely. Keeping them as separate series keeps the two dates separate too.

Applies to
Monetary obligations in default where no contractual rate was agreed, including an unreturned housing deposit
Review cadence
Checked once a year

What we have recorded

  1. 2026-10-09
    5% per year

    On a ₩200,000,000 deposit this is ₩10,000,000 a year, roughly ₩27,400 a day. When it starts is the harder question: returning the deposit and returning the property are in principle concurrent obligations, so a tenant still occupying the property who has neither performed nor properly tendered delivery can face an argument that the landlord is not yet in default at all.

    Civil Act — statutory interest rate for monetary obligations

One reading so far. This becomes a history the first time the figure moves while we are watching — which is the part that cannot be reconstructed later.