HST on legal fees and disbursements

The Canada Revenue Agency's policy statement on lawyers' disbursements, P-209R, turns on whether an amount was incurred as agent for the client or not incurred as agent. The label is about the legal relationship at the moment the amount was incurred, not about the type of expense or who eventually receives the money.

• Where an amount is incurred as agent, the client is treated as the person who incurred it. The firm is passing on a reimbursement, so it is ordinarily added to the bill outside the tax calculation.
• Where an amount is not incurred as agent, it forms part of what the firm itself supplies. It ordinarily joins the fees in the subtotal that tax is calculated on.
• The policy statement is general guidance. The facts of a specific transaction, and the terms on which the amount was incurred, can change the classification. Two firms billing what looks like the same expense can properly reach different answers.

Two practical consequences follow. First, a general position in the policy statement can be displaced where the facts point strongly the other way, so a category is a starting point and not a conclusion. Second, where an amount incurred as agent already includes tax charged by the third party, it is passed through as the full amount received and does not re-enter the taxable subtotal; putting it there charges tax on tax. The CRA's guidance on out-of-pocket expenses deals with the same distinction outside the legal context and is a useful cross-check.

This page explains why the tax lands where it does: the agency distinction, the rate assumption, and rounding. The calculator page documents the tool's own method and its limits, and the invoice guide walks through an account you have already received. Deliberately, none of the three repeats the others: mechanics here, method on the calculator page, review workflow there.

Reading the rows in order gives you the sequence: build the subtotal, calculate the tax on the subtotal, add reimbursements, then apply credits. A credit applied earlier in the sequence produces a tax figure that cannot be reconciled.

Ontario's ordinary rate is 13%, and the calculator on this site uses that ordinary rate. That assumption is not universal, and the CRA's own material identifies several reasons a different result can follow.

• Place of supply. Where a supply is treated as made in another province, a different rate can apply. The CRA's place-of-supply material sets out the rules; a client's address alone does not settle the question.
• Non-resident and cross-border situations. Supplies with a non-resident element can be treated differently, and the analysis is fact-specific.
• Exempt and specially treated supplies. Not every amount on a legal bill is an ordinary taxable supply.
• Registration status. Whether tax is chargeable at all depends on the supplier's status and obligations under the general rules for registrants.

Treat 13% as an input you have confirmed, not as a constant. The CRA calculator and rate page is the place to confirm the current ordinary rate before you rely on any total.

The tool on this site calculates tax on a single subtotal and rounds the result to the nearest cent. Many billing systems instead calculate and round tax line by line, then add the rounded amounts. Both approaches are ordinary, and they can differ by a cent or two on a bill with many small lines.

• A one-cent gap between your reconstruction and the bill is usually a rounding convention, not an error in either figure.
• A gap of dollars is usually a classification difference: an amount you placed inside the subtotal that the firm placed outside it, or the reverse.
• Reconstruct the subtotal first. If the subtotal matches and the tax does not, the issue is rate or rounding. If the subtotal does not match, the issue is classification.

Reconciling a tax line requires the bill to show the components separately: fees, amounts not incurred as agent, amounts incurred as agent, and the tax. Where a bill collapses all disbursements into one figure, the taxable subtotal cannot be rebuilt from the face of the document, and the sensible step is to ask the firm for the split.

Registrant identification is also ordinarily expected on documentation supporting a tax amount, where required under the current CRA invoice rules. This site does not state a fixed dollar threshold for that requirement, because published thresholds and the way they are expressed have not been uniform across sources. Check the current registrant guidance rather than relying on a remembered figure.

• Applying the tax to the gross total, so the as-agent reimbursement is taxed as if the firm had supplied it.
• Deducting the retainer before calculating tax, which changes the tax figure and guarantees a mismatch.
• Classifying by the type of expense rather than by how it was incurred, then assuming every payment to a public body is a reimbursement.
• Charging or recovering tax twice on the same amount: once on the underlying receipt and again on the on-charged line.
• Carrying a rate forward from an old bill or another province instead of confirming the rate that applies to the supply.
• Chasing a one-cent difference caused by line-by-line rounding while a misclassified disbursement sits unexamined.

• Split the bill into three buckets - fees, not incurred as agent, incurred as agent - before doing any arithmetic.
• Rebuild the subtotal and tax with the Ontario Legal Fees and HST Calculator, then compare against the bill line by line.
• If a whole block of the bill is unclear rather than just the tax, work through the invoice review worksheet.
• Confirm the current rate with the CRA calculator and rate page, read P-209R for the agency distinction, and check the place-of-supply rules and RC4022 where anything is cross-border or unusual. The Law Society's HST page gives the Ontario billing context.
• Ask the firm to identify the classification it applied to any disbursement you cannot place, and get professional tax advice before acting on a conclusion of your own.

Legal information reviewed: 21 August 2026. Checked against the official sources listed on this page. Rates, fees and rules change; confirm anything you rely on.