Deemed rent on housing deposits calculator

Formula and scope

2026 statutory deposit rate: 3.1%. Formula: (total deposits − KRW 300 million) × 60% × days ÷ 365 × 3.1%; bookkeeping permits deduction of related financial income. Applies to at least 3 non-small homes with deposits above KRW 300 million. From 2026 it also covers 2 homes each assessed above KRW 1.2 billion if deposits exceed KRW 1.2 billion.

What this calculator cannot apply

Verify combined spousal housing count and taxable deposits yourself. Small homes of at most 40 m² and assessed at at most KRW 200 million are excluded from the count through end-2026. One sole-business interval with unchanged deposits only; joint businesses, subleases and per-home changes/allocation order are excluded. Result is rental receipts to add, not tax.

Calculation basis and official sources

• NTS deemed rent on housing deposits
• Income Tax Enforcement Rule, Article 23

Sources checked: 8 November 2026 (KST, Asia/Seoul)