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Compliance Essentials for CRA Prescribed Interest and GST/HST Rebate Changes

Learn how the updated prescribed interest rates and the transition to a new homebuyers’ GST/HST rebate under Bill C-4 affect your compliance obligations and tax filings.

By NomadicTax Research Team · 5-8 min read

New Interest Rates — What It Means for Your Filing

CRA’s prescribed interest rates for Q2 2026 (April 1-June 30) are now in effect. Key rates include 7 % on overdue taxes and contributions, 3 % or 5 % on overpayments depending on corporate or individual status, and 6.20 % applicable to corporate indebtedness and interest-free/low-interest loans. (canada.ca)

Who is Most Affected?

  • Individuals/investors with income tax or benefit balances owing will see interest charged at 7 %, compounded daily.
  • Corporations expecting refunds must note the 3 % overpayment rate; non-corporate (individuals, trusts) see 5 %. This can impact cash flow estimates.
  • Employers/shareholders providing interest-free or low-interest loans will have to calculate taxable benefits using the 3 % rate. In cross-period arrangements, watch for CRA’s definitions of "pertinent indebtedness."

First-Time Home Buyers’ GST/HST Rebate under Bill C-4

The new First-Time Home Buyers’ GST rebate introduced by Bill C-4 removes GST entirely on new homes priced up to $1 million for first-time buyers, and reduces GST for homes between $1 million and $1.5 million. Agreements of purchase must be entered into on or after March 20, 2025 and before 2031 for eligibility. (canada.ca)

Compliance Tips

  • Ensure you maintain records of purchase agreements, dates, and construction details to prove eligibility.
  • If building or buying a condominium or substantially renovated home, confirm whether substantial renovation rules are satisfied.
  • Use GST/HST rebate forms correctly; misreporting taxable acquisition prices can delay or reduce benefit.

Practical Compliance Best Practices

Compliance AreaPractical Tips
Installments & PaymentsAlign instalment payments with updated rates to avoid late payment interest and penalties. Double-check due dates and amounts.
Reporting Corporate-Individual OverpaymentsAssess expected refunds vs. overpayments to manage cash flow given lower interest on overpayments.
Documentation for GST RebateKeep signed purchase agreements, occupancy certificates, and seller invoices. The date of agreement is crucial.
Source Deductions & WithholdingsEmployers: use updated tax tables after rate changes. Individuals: register with a tax professional or software that reflects Bill C-4 changes.

Example Scenario

Sarah is a first-time home buyer who enters into a contract on August 1, 2025 to purchase a newly built home costing $1,200,000. Under the new rebate rules:

  • Since purchase is between $1 million and $1.5 million, she cannot eliminate GST fully but will receive a reduced rate rebate.
  • She should submit the GST rebate claim with purchase agreement and construction documents.
  • If she had overpaid her taxes last year, she will receive 5 % interest on overpayments.
  • If she owed taxes, the amount overdue will carry 7 % interest, so paying on time or making instalments is important.

Action Checklist

  • Review Q2 2026 prescribed interest rates and adjust your cash-flow forecasts accordingly.
  • For first-time home buyers, check eligibility under the new GST rebate rules; ensure accurate documentation.
  • Update your accounting system or software to reflect the 14 % base rate, new rebate rules, and interest rates.
  • Consult tax advisor if you have cross-jurisdictional income, foreign property, or significant capital gains to understand interaction with rate changes.

Key takeaway: The interest rate changes and the GST rebate transition create both filings and documentation obligations. Staying ahead ensures maximizing benefits and avoiding unnecessary charges.

Sources

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