Free tool
What does it cost if you miss?
An advance authorisation is a promise: import these inputs without paying duty, and export this much by this date. Miss it and the duty you saved becomes duty you owe, with interest from the day the period ended. Put your own figures in and this works out what is at risk today — and how many days are left to do something about it.
Nothing you type leaves your browser. No account, no form, no upload — the arithmetic runs in the page, and it is the same arithmetic the product runs.
The authorisation
What was promised.
The interest rate is yours to state. There is no rate here by default, because a rate nobody agreed to is not a rate.
Against it
What has actually gone out.
Count only shipping bills that quote this authorisation number. One that does not is not counted towards fulfilment — which is the discrepancy most exporters find at closure rather than at shipment.
Why it is the lower of the two
Quantity and value, never the average.
An obligation has two measures and both must be met. Ship the full tonnage at a lower price and the value is short; ship less at a better price and the quantity is short. Discharge is therefore the lower of the two percentages — never the average, and never whichever flatters. An exporter who averages them arrives at the issuing office believing they are complete and is told otherwise.
Interest runs from the day the period ended, not from today. Inside the period nothing has accrued, and this says so rather than printing a zero somebody has to interpret.
SIAARU does this continuously across every authorisation you hold, ranks them by money at risk rather than by date, and — reading your own order book and production plan — says months in advance which ones will miss. That is DutyGuard.