Tax Planning
Prescribed Interest Rates Q3 2026: Planning for Overpayments, Corporate Loans & More
CRA has set new prescribed interest rates for July-September 2026. Learn how these affect personal refunds, corporate overpayments, overdue taxes and low-interest loans.
By NomadicTax Research Team • 5-8 min read • August 5, 2026
## Overview of CRA’s Q3 2026 Prescribed Rates
From **July 1 to September 30, 2026**, the Canada Revenue Agency has set the following prescribed annual interest rates: ([canada.ca](https://www.canada.ca/en/revenue-agency/services/tax/prescribed-interest-rates/2026-q3.html?utm_source=openai))
| Type of Amount | Overdue by Taxpayer / Remittances | Overpayment Rates |
|----------------|------------------------------------|--------------------|
| Overdue taxes / CPP / EI premiums | 7% | — |
| Corporate taxpayer overpayments | — | 3% |
| Non-corporate taxpayer overpayments | — | 5% |
| Taxable benefits from employee/shareholder loans | — | 3% |
| Corporate loans / indebtedness | — | **6.30%** |
## Why These Rates Matter
- **Individual taxpayers** who overpay (e.g., too much tax withheld) will receive only 5% annually. Yet, if you owe tax, interest is a hefty 7%. Planning to reduce overpayment may make sense.
- **Corporations** face only 3% on overpayments but must pay 7% if overdue — watch cash flow and remittances carefully.
- For any **low or interest-free loan** from employer/shareholder, the benefit gets taxed using a 3% rate — important in benefits planning.
## Planning Action Points
- Time your payments. If you expect to owe, paying before this quarter begins (or arranging payments) can reduce costly interest.
- Claiming refunds: File **as soon as possible** if you have overpayments — you only accumulate 5% instead of losing value waiting.
- Monitor **loans or advances** arranged for employees: ensure any interest or benefit calculations use the 3% rule.
- For corporations incurring debt, consider if refinancing can reduce interest-bearing load given the 6.30% rate.
## Example Scenarios
- **Freelancer Alice** overpaid her 2025 taxes by $1,000; from July to filing, she’ll receive 5% interest but if she owes instead, her cost is 7%.
- **CorpX** has overdue GST remittances; effective interest is 7%, so delaying carries real cost.
- **Employ-ee loan** of $10,000 interest-free: taxable benefit will use prescribed 3% rate — adding $300 in taxable employment income.
## Tips for Tax-Smart Choices
- Keep close tabs on **filing deadlines** and remittance dates.
- Use tax instalments wisely to avoid overpayment while also avoiding penalties.
- Records for employment-loan benefits should be maintained carefully—CRA may audit.
- When possible, align corporate spending or debt structuring in favor of lower interest obligations.
These prescribed rates are automatic and apply across various tax categories — understanding them gives you better control over tax timing and cash flow.