What “ready to file” actually means before an odd-month deadline

Many owners treat “ready” as the moment the bookkeeper says the trial balance is closed. For quarterly business tax in Taiwan, that is necessary but not sufficient.

Ready means every sales invoice in the period has a matching recognition path, purchase invoices claimed for input tax are on hand (or deliberately excluded), and withholding summaries reconcile to payroll. It also means someone has checked whether last period’s caveats — provisional estimates, pending credit notes — were cleared or carried forward with a note.

In our Quarterly Tax Readiness Review, we use three labels: ready to file, file with caveats, and hold. Caveats are not failures; they are items the preparer must disclose or adjust. Hold means a correction would change the return amount enough that filing now creates more work later.

If you are inside the final ten days of the window, prioritise sales completeness and input-tax support over cosmetic ledger tidy-ups. Cosmetic work can wait; unsupported input tax cannot.