BOS CRA Rules

Rules · XB

XB-04 — Foreign currency conversion, ETA s.159

Stale — principle only — The principle holds; a figure or date in it may not. Check the figure before you use it.
Stale — principle only (rate box shows NS at 15%)

Foreign currency conversion, ETA s.159: convert at the value of the foreign currency in Canadian dollars on the day the GST/HST is payable, or on another day CRA accepts — the day consideration is paid, the day the currency was acquired, or an average rate for the month in which tax became payable. Acceptable sources: the source actually used for the conversion, the source the person normally uses, a Canadian chartered bank, the Bank of Canada, or the CBSA value-for-duty rate. A rate database that does not actually buy and sell currency is not acceptable. The chosen day and source must be applied consistently for a reasonable period, such as one year, and documented. Weekends and holidays use the previous business day. Supplier and recipient need not use the same method

Sources

Record

Anchor ID
XB-04 (permanent)
Jurisdiction
FED
Section
2.6 Cross-border and e-commerce
Verified
2026-08-27 — by a person, against the source
Review cycle
legislative

Changes mentioning XB-04

DateChange
28 Aug 2026

Added the banned source's own URL to the Source column of 8 Part 4 rows. The Confirm at URLs alone were not matchable: they point at the replacement authority, so a checker matching on them would have rejected the correct source and passed the banned one. With Source URLs in place, exactly two rows are true dual-listings — Memorandum 3-6 (also XB-04) and RC4022 (also REG-03, TIM-01), the two the SCOPED design exists for. The remaining 6 rows have no live URL because the source is cancelled, 404 or fictional; those stay a manual name check

The full changelog