# Indonesian Tax Calculator

Calculate selected Indonesian tax scenarios with exact arithmetic, rule references and explicit historical coverage limits.

## URL

https://ilham.dev/tools/indonesian-tax-calculator/

## What It Does

Calculate selected Indonesian tax scenarios using explicit dates and exact integer-fraction arithmetic. This experimental release includes a reference catalogue of 193 object options from the DJP calculator, but only selected scenarios have audited calculation rules. Historical filing-code validity is not verified. Income-tax coverage ends in 2024; selected domestic VAT scenarios cover 2025. No scenario supports 2026 or later yet.

## Features

- Exact integer-fraction tax arithmetic with explicit PKP rounding
- Selected audited income-tax scenarios through 2024-12-31
- Corporate standard rates and Article 31E turnover allocation for calendar tax years 2009–2024
- Selected 2025 domestic VAT scenarios with statutory rates, adjusted bases and retail transition
- Search 193 reference object options by code or English or Indonesian name
- Block unsupported dates and scenarios without a fallback rate

## Input

Whole-rupiah taxable amount, date, object, optional Article 31E turnover and confirmed scenario assumptions number input.

## Output

Exact calculation steps, assumptions, audit window and official rule references table output.

## Privacy

Processing happens locally in the browser.

No input data is uploaded to ilham.dev.

- Requires login: false
- Requires API key: false
- Stores user data: false


## Examples

- Does this cover every Indonesian tax object and historical period?
- What changes for VAT in 2025?
- Why can the result contain a fraction of a rupiah?
- Are my income or transaction amounts stored?


## Limitations

- Experimental partial release, not a complete tax calculator or tax return
- Income-tax coverage ends in 2024; selected domestic VAT scenarios end in 2025
- No 2026 calculations, VAT imports, special regimes or PPnBM amount calculation
- Snapshot codes are not period-validated historical filing codes
- PPh 22, PPh 15, PPnBM and several other scenarios are reference only
- No monthly TER, gross-to-PKP, exemptions or automatic tax-regime or turnover-composition determination
- No listed-company corporate reduction or non-calendar corporate tax years
- All tax figures precede tax-document rounding; Article 31E allocations have no intermediate rounding


## Related Tools

- https://ilham.dev/tools/take-home-pay-calculator/


## Questions

### Does this cover every Indonesian tax object and historical period?

No. The catalogue contains all 193 object options in the downloaded DJP calculator HTML, not a complete national or historical filing registry. Calculation coverage is narrower and listed on the tool. Unsupported periods and scenarios are blocked rather than assigned a guessed rate.

### What changes for VAT in 2025?

Select an explicit 2025 domestic scenario. The statutory rate is 12%. For ordinary non-luxury goods/services, DPP is 11/12 of the price, giving an effective 11% burden. Luxury final-consumer supplies use that adjusted base only in January, then the full price from February. Other taxable domestic luxury supplies use the full price throughout 2025. PPnBM amounts, special regimes, imports and 2026 are not supported.

### Why can the result contain a fraction of a rupiah?

Gross-up and VAT-inclusive calculations can produce recurring fractions. The calculator preserves those fractions exactly instead of silently rounding them. Results are before tax-document rounding, except for the explicitly applied statutory PKP rounding.

### Are my income or transaction amounts stored?

Calculations run in the browser. This tool does not upload inputs, put them in the URL, or save them in browser storage. Copying a calculation sends it to your clipboard only when you choose that action.