Use the fixed CSV template or enter five P&L figures. OpenTax suggests treatments, you confirm them, and the verified engine computes the draft.
Each row stays in this tab. The file is read locally, classified with fixed rules, and discarded when you close the page.
16 rows were read locally and classified.
No row, amount, or company file is sent to a server.
The browser runs the same engine contract as the verified reference suite.
This is a draft working paper, never tax advice or an IRAS filing.
Fixed rules make the first suggestion. Highlighted rows need your decision before the draft can be computed.
Start with the example, a CSV, or five typed figures.
Every adjustment points back to the transaction rows you reviewed. The result remains a draft for professional review.
Review every transaction treatment, then compute the draft.
This is a preparation aid only. You or your accountant still review and enter the final figures in myTax Portal.
The working Form C-S map is generated from the reviewed computation.
OpenTax shows the working figure and its source rows. Eligibility, elections, supporting schedules, and filing positions still require professional judgment.