llms.txt
+4
https://fueltaxmath.com/llms.txt
+ ## Deadlines+ - [IFTA filing deadlines](https://fueltaxmath.com/ifta-deadlines): quarterly due dates with the IFTA R960 weekend/holiday rule applied (3Q2026 is due 2026-11-02) and a free .ics calendar file (https://fueltaxmath.com/downloads/ifta-filing-deadlines.ics); Kentucky KYU, New Mexico WDT, New York HUT and Oregon weight-mile tax notes on those state pages+ ## Record-keeping+ - [IFTA audit-readiness checker](https://fueltaxmath.com/ifta-audit-checker): load trip miles by state and fuel receipts as CSV; flags quarters with miles but no fuel, fuel in states with no miles, odometer gaps, duplicate receipts, receipts outside the quarter and implausible MPG. Runs entirely in the browser (no upload). Summarizes IFTA Procedures Manual P500 record-keeping rules (P510 4-year retention, P540 distance records, P550 fuel receipts, P570 4.00 MPG inadequate-records assessment). CS