A clear path from ledger
to draft computation.
Review each classification. Trace the numbers. Stay in control.
Check the story behind each number.
| Transaction | Amount (S$) | Review status |
|---|---|---|
| Service revenue | 12,000.00 | Income |
| Software subscription | 240.00 | Review |
| Office supplies | 180.00 | Review |
| Client meal | 85.00 | Needs review |
Add your transactions.
Use the CSV template or enter your P&L figures. Start with a small Singapore company and roughly 50 rows or fewer.
Confirm the treatment.
Inspect each suggested category and correct it. Unresolved items block computation until you choose a treatment.
Export for review.
Get a traceable draft, a loss carry-forward schedule and a Form C-S working map. Download Markdown or print to PDF.
The numbers should be checkable.
The browser tool uses fixed rules and deterministic arithmetic. You review the classification; the engine computes the draft.
- Tested against reference computations
- Golden cases check the engine against externally verified answers, with additional refusal tests for unsupported situations.
- A clear boundary
- YA2025, SGD, small companies. Foreign income, related-party arrangements, group relief and GST are outside the self-serve scope.
- Private by design
- The tool reads and computes in your tab. No account, no server upload and no API calls containing your transactions.
- Free while it proves itself
- A first draft for professional review. It does not file a tax return or replace an accountant.
AI can prepare.
People still decide.
Built by Kuan Yu, who also builds reviewable AI workflows at WorkflowLab.
What if my records are more complicated?
The self-serve tool is deliberately bounded. A live walkthrough can show the broader pipeline using demonstration data. Bring questions; this website does not accept client documents.
Can I use this for another assessment year?
This version is pinned to YA2025. Do not use it for another assessment year without checking the applicable rules and rates with a professional.
What happened to the original AI Tax site?
The previous story is preserved in the archive. The current tool puts the source records, review decisions and draft computation first.