You Registered for HST to Invoice Your Corporation. That Number Also Covers Your Airbnb.

Ali Alsharif, CPA, MPAcc — Chrome Accounting

This is written for Ontario owners who hold a corporation and also rent property — incorporated owners who bill their own company, sole proprietors with a GST/HST number, and landlords listing on Airbnb or Vrbo.

A GST/HST account belongs to the person, not to one activity. Once you register, you collect on every taxable supply that person makes.

A common setup goes like this. An accountant tells an owner to register as a sole proprietor so she can invoice her corporation for management fees. That part can be valid. What gets missed is the cottage listed on Airbnb.

Short-term lodging in Ontario is generally taxable. The same GST/HST number now sits on that rental too. If no one files the GST/HST returns, the Canada Revenue Agency (CRA) can assess tax, a late-filing penalty, and compound interest — even though the T1 already reported the rent.

This article explains why that happens, and how to stop it before the cost stacks.

The mistake, step by step

1. The owner incorporates.
2. Someone recommends a sole-proprietorship GST/HST number so the owner can charge the company management fees.
3. Those fees are a taxable supply. Registration can be correct.
4. The same person also hosts a short-term rental.
5. The T1 is filed. Rent and expenses appear on Form T776.
6. Nobody files GST/HST returns. Nobody adds 13% to the Airbnb price — or the host assumes Airbnb already remitted everything.
7. Years later the account is still open, returns are missing, and interest has been running.

The failure is not "she should never have registered." The failure is treating the GST/HST number as a label for one invoice stream. CRA does not.

Does one GST/HST number cover both the fees and the cottage?

Yes. For an individual, registration is by person. Management fees billed to your corporation and short-term lodging you supply under your own name are both commercial activities of that same person, unless a particular supply is exempt or zero-rated.

What you wrote on the registration form does not wall off your other taxable supplies. If the cottage is held in the corporation, the corporation needs its own analysis. If the cottage is in your personal name, your personal GST/HST account is the one that matters.

Short-term versus long-term stays

A listing that says "30-day minimum" is exempt only if guests actually stay that long. Nightly summer use is still short-term.

What changed on 1 July 2021

From that date, accommodation platforms generally collect GST/HST on short-term stays in Canada when the host is not registered.

If the host is registered:

• The host remains the supplier.
• The host must charge, report, and remit.
• Give Airbnb your GST/HST number so the platform does not add a second layer of tax on top of your price.

That is why "I registered only for management fees" is expensive. Registration can move the collection duty from the platform to you. If no one then files your returns, the tax the platform might have remitted becomes your unfiled net tax.

A line on an Airbnb annual report called "Airbnb remitted taxes" is not automatically full 13% HST on the stay. It may be occupancy tax, or only part of the GST/HST. Read the footnote and get the transaction-level tax report before you treat it as a full remittance.

Is GST/HST based on the Airbnb payout or on gross earnings?

HST is calculated on the consideration for the lodging — the nightly rate, cleaning fee, and similar mandatory charges — not on the amount that lands in your bank after Airbnb's host fee.

• Gross earnings on the Airbnb annual report are usually the better starting point for line 101 and tax collectible.
• Host service fees are an expense. If Airbnb charged HST on that fee and the invoice supports it, that HST can be an ITC — not a reduction of your taxable rent.
• Adjustments, resolutions, and refunds need their own lines so you do not pay tax on cancelled stays.

The $30,000 threshold does not save a registrant

The small-supplier threshold — generally $30,000 of taxable supplies over four calendar quarters, or in a single quarter — decides whether you must register.

It does not decide whether a person who already has a number must collect. Once you are registered, you collect on taxable supplies from that point forward, including a $5,000 winter of cottage bookings and a $20,000 management-fee invoice.

Crossing $30,000 on combined taxable supplies — fees plus short-term rent plus any other taxable sales — also ends small-supplier status, even if each stream looks small on its own.

How to claim ITCs if the T1 is already filed

ITCs are not a T776 line, and they are not a reason to reopen old personal-tax years. They belong on the GST/HST return, at line 106.

1. File every missing GST/HST return for the periods the account was open.
2. Report taxable short-term charges and tax collectible.
3. Claim HST paid on inputs used in that commercial activity, with invoices that meet the ITC information rules — supplier name, date, amount, and GST/HST number where required.
4. Do not claim ITCs on mortgage interest, most insurance, property tax, wages, or purchases from a non-registrant.
5. Leave the filed T1 and T776 as they are, unless a current-year GST refund is actually issued. In that case the recovery is picked up in the year it arises — not by amending prior T1s.

Amending an old T1 to strip HST out of rental expenses usually raises that year's taxable income. CRA then charges arrears interest from the original balance-due date. For years that are already statute-barred, a T1 adjustment can reopen a year CRA could not otherwise assess. That is extra cost for a small income-tax difference. The GST/HST return is where the ITC belongs.

Most registrants must claim an ITC by the due date of the return for the last reporting period that ends within four years after the period in which the credit first arose. For older years, file the original-period GST/HST returns. When CRA assesses a late GST/HST return, it is required to take into account the ITCs that belonged to that period.

What late filing costs

If there is net tax owing:

• Late-filing penalty — 1% of the net tax owing, plus 0.25% per complete month the return is late, capped at 12 months (4%).
• Interest at the prescribed GST/HST overdue rate, compounded daily, from the day after the return was due.
• Interest keeps accruing until the tax is paid.

Relief under the Voluntary Disclosures Program is not guaranteed. If a disclosure is not accepted, those penalties and the full interest generally stay.

Worked pattern, illustration only: 13% on $80,000 of short-term gross is $10,400 of tax before ITCs. Two years of that, plus 4% penalties and several years of compound interest, is how a "we only needed the number for management fees" file becomes a five-figure CRA balance.

Checklist before you register — or after you already did

• List every supply the same person makes — management fees, consulting, short-term nights, products, commissions.
• Mark each one taxable, zero-rated, or exempt.
• Confirm who owns the property — you, or the corporation.
• If you are registered, give the number to Airbnb and turn off double collection.
• Calendar the GST/HST due dates the same way you calendar April 30.
• Keep invoices that support ITCs. A T776 total is not an invoice.
• Reconcile Airbnb gross earnings to line 101, not to the net deposit.
• If GST/HST returns are missing, file those returns. Do not open a T1 amendment as the fix.

Questions to ask any accountant who suggests a personal HST number

1. Which person will hold the account — me, or the corporation?
2. Which of my activities become taxable the day that account is effective?
3. Does my short-term rental sit in that same person?
4. Who files the GST/HST returns, and on what cycle?
5. After registration, will Airbnb stop remitting on my behalf?
6. How will management fees and rent be invoiced so that GST/HST and income tax tell the same story?

If the answer to question 3 is "we did not look at the listings," do not register yet.

FAQ

I only registered so I could bill my company. Can I ignore Airbnb?

No. The account is yours.

Airbnb already collected something from guests. Am I done?

Only if you were unregistered and the amount is GST/HST on your supply. If you were registered, collection is still yours. Always match the remittance report to 13% of taxable consideration.

My T1 is already filed. Should I amend it so I can claim ITCs?

No. File the GST/HST returns and claim ITCs there. Do not amend prior T1s as the method of claiming those credits.

The cottage is in the corporation.

Then the corporation's GST/HST position is separate from your personal management-fee account. Do not mix the two on one return.

Stays are sometimes 10 days and sometimes 40.

Split them. Tax the short stays. Leave the qualifying long residential stays out of taxable supplies.

How Chrome Accounting reviews this

Chrome Accounting is a virtual CPA Ontario firm. We work with incorporated owners and with landlords who hold property personally. When both exist in the same household, we map:

• who owns each property
• which supplies are taxable
• whether a GST/HST number is already open
• which GST/HST returns are missing
• which ITCs are still in time

If you have a personal GST/HST number and an Airbnb, Vrbo, or cottage listing, send the registration confirmation, the Airbnb annual earnings reports, and the T776. We will tell you whether HST was due, what can still be claimed on the GST/HST returns, and what those late returns should show — before interest runs another quarter.

This article is general information for Ontario residents and Canadian GST/HST registrants. It is not a CRA ruling, a legal opinion, or advice for a specific person. Results depend on who owns the property, the length of stay, place of supply, registration status, invoice support, and the dates returns were due. Rules and rates change. Do not register, deregister, or file from this page alone. A CPA Ontario firm can review your registration, platform reports, and rental records and apply the Excise Tax Act to your situation.