Interest Income Aggregator with Estimated Rate Range

Interest Income Aggregator (Exact or Range APR)
2026 Happycode7. All rights reserved.

How to use
- For a known rate: choose Exact and enter the annual percentage rate (APR).
- For an estimated rate: choose Range and enter min–max APR.
- Select product type: Lump-sum deposit or Monthly savings.
- Add or remove rows freely (up to a safe limit). Results show a gross/net interest range.

Notes (global-friendly)
- Currency is displayed in KRW (₩). APR is annual.
- Monthly savings uses a simple approximation (non-compounding) commonly used for quick estimates.
- Net amounts apply a default withholding tax of 15.4% (typical in Korea). Your jurisdiction may differ.

Bank / Note	Amount type	Amount (KRW)	Term (months)	Rate input	Exact APR (%)	Min APR (%)	Max APR (%)	Product	Remove

Results will appear here.

Disclaimer
- This calculator provides estimates only and may differ from actual bank statements and tax rules.
- If gross interest exceeds KRW 20,000,000, additional filing rules may apply (Korea).
- For accurate results, confirm with your bank or a qualified tax professional.
2026 Happycode7. All rights reserved.