Transfer pricing adjustments and value for duty in Canada

Why does a year-end transfer pricing adjustment reach back into your CADs?

A multinational group sets the price at which a foreign parent sells goods to its Canadian subsidiary, then tests that price at year end against its transfer pricing policy. When the Canadian company's results land outside the target range, the parent issues a debit or credit note, and the price of a year's worth of imports changes after the goods have cleared.

For customs, that price was the starting point of the value for duty on every Commercial Accounting Declaration (CAD/B3) line in the year. CBSA Memorandum D13-4-5 calls these "compensating adjustments" and says they can happen during the year, at year end or after year end. Each one raises a customs question the tax team rarely asks: does the value for duty on lines already accounted for now have to change?

The answer depends on three things: the direction of the net adjustment, whether a written agreement existed when the goods were imported, and whether the transfer price was an acceptable basis for value in the first place. What goes into value for duty generally, and when a related-party price stands at all, is covered in value for duty in Canada: what counts. This page starts from an accepted transfer price and follows the adjustment.

When is the transfer price an acceptable starting point?

D13-4-5 says a transfer price set for tax purposes "may be an acceptable starting point" under the transaction value method if a transfer price agreement shows the circumstances of the sale. It then warns about method. Transfer pricing methods in the OECD Guidelines are built for income tax and may rest on factors that do not matter for customs. A comparable uncontrolled price method resembles the customs test of identical or similar goods and "may better help support an uninfluenced price", while a transactional profit method such as the transactional net margin method (TNMM) "may not". An importer using a profit-based method should expect the CBSA to ask for price evidence tied to the specific imports.

That matters for adjustments in both directions. An upward adjustment shows the original price was too low, so the value for duty was understated. A downward adjustment can only lower the value if the adjusted price is itself acceptable for customs.

What do you have to do after an upward adjustment?

D13-4-5 is direct: if the net total of the period's adjustments is upward, the importer "must submit a correction under the authority of section 32.2 of the Act whether or not the imported goods are subject to duties". The upward amount is added to the value for duty of the goods it relates to.

Three consequences follow:

• Duty-free goods are not exempt. The value for duty also sets GST. Section 215 of the Excise Tax Act puts the value for GST at the value for duty plus duties and taxes, whether or not the goods are subject to duty, and section 212 charges GST at 5% on it. A GST registrant may recover that GST as an input tax credit, but the correction is still owed.
• Every line in the period moves. The adjustment has to be spread over the goods it relates to. D13-4-5 does not prescribe an allocation key. One workable method is the share of the year's import value by product or by entity; whichever method you use, keep the calculation, because the CBSA can ask for it.
• Other post-import payments come with it. The memorandum's note to its example says any other payment made after import that belongs in the price, such as selling commissions or design fees, must also be added. Payments for real, identifiable services are not added, and Memorandum D13-4-13 explains how management fees, research and development and marketing contributions are tested.

Failing to correct is not a neutral choice. Section 32.2 creates a legal obligation, and the AMPS penalties and specified-rate interest that follow a missed correction are set out in correcting a Canadian entry.

Can a downward adjustment lower the value for duty?

Only under one condition. Paragraph 48(5)(c) of the Customs Act disregards any rebate or other decrease in price "effected after the goods are imported", and Memorandum D13-4-10 applies that to any agreement made after import to reduce the price. D13-4-10 also sets the general exception, for any buyer: a reduction is accepted if it results from an agreement in writing that was in effect at import (or from cash discount terms offered before import). D13-4-5 applies that rule to transfer pricing: paragraph 48(5)(c) does not apply to an adjustment that "results from an agreement that is in writing and in effect at the time the goods are imported". Without that written agreement in force on the import date, a credit note from the parent does not change the value for duty.

With it, the route depends on revenue:

The duty-free and taxable row is the one people miss. Memorandum D11-6-6 says that where goods are duty-free but taxable, the importer "shall make a correction" under section 32.2 even when the result lowers the GST, and that the decrease "would not result in a refund of the GST under the Act".

What does the CBSA ask for before it refunds a downward adjustment?

D13-4-5 says refund requests based on downward adjustments get "greater scrutiny", particularly when the price was set by a profit-based method. The importer must first show:

1. that the downward adjustment brings the result within the arm's length range of the profit indicator in the group's transfer pricing documentation;
2. that the adjustment involved an actual transfer of funds; and
3. that it was included in the importer's income tax filings with the Canada Revenue Agency.

Only then does the CBSA ask for the customs evidence: the circumstances of the sale or a test value showing the adjusted price is uninfluenced by the relationship. A refund claim built from the tax file alone will usually stall at that second step.

The refund itself is a section 74 adjustment to each affected CAD, filed within four years of accounting with the supporting documents uploaded the same day, as Memorandum D17-2-1 requires. For two or more CADs with the same legislative issue, D17-2-1 allows a mass adjustment, and for a refund across fewer than 25 CADs it requires documents for each one.

When does the clock start, and can you wait for year end?

D13-4-5 says the importer has "specific information giving reason to believe" that the declarations are wrong when the net total of the period's adjustments is identified. D11-6-6 confirms two acceptable timings for transfer price adjustments only:

• correct within 90 days after each adjustment is made, for example quarterly; or
• wait until the net total of the adjustments for the fiscal period is identified, and correct within 90 days of that date.

The waiting option has a catch. D11-6-6 describes an importer that learns during the year that invoiced prices were higher than those declared: that knowledge starts its own 90-day clock, and the year-end adjustment then starts another. Waiting for the net total covers the transfer pricing adjustment itself, not a separate error found along the way.

The outer limit is four years. Subsection 32.2(4) ends the obligation to correct four years after the goods were accounted for, and subsection 74(3) sets the same four years for most refunds. An adjustment for a fiscal year that closes many months after the first imports of the year is still inside both windows, but the earliest lines of a multi-year adjustment can fall outside them.

How do surtax and GST move with the value?

Every percentage charge on the line follows the value for duty:

• Customs duty at the rate for the tariff item and tariff treatment.
• Surtax where an order charges it as a percentage of the value for duty. CBSA Customs Notice 26-23 sets the United States Surtax Order (2026) at 15%, 25% or 50% of the value for duty on listed goods originating in the US, effective September 8, 2026, in addition to any other duties. A CUSMA preference does not remove it.
• GST at 5% on the value for duty plus duties and surtax. Customs Notice 26-23 says GST is calculated on a value "inclusive of surtax even when customs duties are remitted".

The date matters. A surtax applies to goods imported while the order is in force, so a year-end adjustment spread over the whole year carries surtax only on the share allocated to lines entered after the order took effect. Allocating the adjustment by period, not just by product, is what gets that number right in both directions. The surtax rules for each order are in why your CAD shows the wrong surtax.

How does one year-end adjustment work out in dollars?

A Canadian distributor buys two product lines from its US parent. Its fiscal year runs from October 1, 2025 to September 30, 2026. The figures are illustrative.

• Product A: originates in the US, qualifies for CUSMA (customs duty 0%), and is listed at 25% in Schedule 2 of the United States Surtax Order (2026). Declared value for duty: CAD 950,000 for goods imported October 1, 2025 to September 7, 2026, and CAD 50,000 from September 8 to September 30, 2026.
• Product B: made in Vietnam, not covered by any surtax order, MFN rate 6.5%. Declared value for duty: CAD 1,000,000.

During the year the parent issues the adjustments D13-4-5 uses in its own example: upward CAD 10,000, upward 20,000, downward 10,000, upward 30,000, and a closing downward 10,000. The net is an upward CAD 40,000, identified on October 28, 2026 when the books close. The transfer pricing agreement was signed in 2024, so it was in effect for every import.

The importer allocates the CAD 40,000 by declared value, 2% of each group:

Interest at the specified rate is added on top; how it is calculated is in correcting a Canadian entry. The correction is due by January 26, 2027, 90 days after October 28, 2026, filed as a mass adjustment across the year's CADs with a section 32.2 value-for-duty reason code.

Two variations show why the period split matters. If the importer had spread the whole CAD 20,000 for product A evenly without regard to date, it would have charged surtax on goods imported before the order existed. And if the year had closed with a net downward CAD 40,000 instead, the importer could claim back the duty and surtax on the same allocation through section 74 refund adjustments, but only by meeting the D13-4-5 evidence test, and the GST on product A would not come back through the CBSA.

How is Canada different from the US on transfer pricing?

Both countries let a related-party adjustment change the customs value only on conditions, but the mechanics differ. The US ties acceptance to a pricing formula set before import and offers reconciliation to flag entries in advance, as set out in transfer pricing adjustments and US customs value. Canada has no equivalent flagging program: an upward net adjustment is always a section 32.2 correction, and a downward one depends on a written agreement in effect at import and a refund claim within four years. A group that imports into both countries usually needs two different year-end procedures from one transfer pricing calculation.

What should you do next on your own entries?

1. Ask the tax team for the adjustment calendar: every debit and credit note between the Canadian importer and related vendors for the last four fiscal years, with dates and the agreement each one rests on.
2. Confirm the written agreement and its effective date against the first import of each period.
3. Net each fiscal period and record the date the net total was identified. That is your reason-to-believe date if you chose to wait for year end.
4. Allocate by product, origin and period, then recalculate duty, surtax and GST on each CAD line.
5. File the upward periods as corrections within 90 days, and decide on downward periods only after assembling the D13-4-5 evidence.

TariffSense reads your CAD lines by vendor, origin and date, applies an adjustment to the lines it belongs to, and recalculates duty, every surtax in force on each line's date and GST, so the amount owing or refundable per CAD is known before the broker files. Filing stays with your broker; confirm the allocation method and the route with a licensed customs broker or trade counsel. The post-entry audit page shows what goes in and what comes back, and the wider line-by-line review is in the CAD audit guide.