BC Rent Increase Calculator: How to Calculate Your 2026 or 2027 Increase

The Rent Increase Formula

The maximum allowable rent increase in BC is a straightforward multiplication:

New Monthly Rent = Current Base Rent + (Current Base Rent × Cap Percentage)

The cap percentage for 2026 is 2.3% and for 2027 is 2.2%. Which cap applies depends on the effective date of your increase, not the date you serve the notice.

Worked Examples

Example 1: Standard 2026 Increase

• Current rent: $2,000/month
• Effective date: July 1, 2026 (2026 cap applies)
• Calculation: $2,000 × 0.023 = $46.00
• New rent: $2,046.00/month

Example 2: Fractional Cents (Rounding Rules)

• Current rent: $1,850.50/month
• Effective date: October 1, 2026
• Calculation: $1,850.50 × 0.023 = $42.5615
• Round down to $42.56 (never round up)
• New rent: $1,893.06/month

Entering $42.57 instead of $42.56 is a statutory breach that voids the entire notice. The RTB enforces this strictly — even one cent of upward rounding invalidates the increase.

Example 3: Cross-Year Notice

• Current rent: $2,500/month
• Notice served September 25, 2026 via mail
• Deemed receipt: September 30, 2026 (5 days for mail)
• Three full months: October, November, December
• Effective date: January 1, 2027 — the 2027 cap of 2.2% applies
• Calculation: $2,500 × 0.022 = $55.00
• New rent: $2,555.00/month

This catches many landlords off guard. You serve the notice in 2026, but because the effective date falls in 2027, you use the lower 2027 rate.

What Counts as "Current Base Rent"?

The calculation uses whatever the tenant is contractually paying right now as the total rent figure. If utilities, parking, or storage fees are bundled into the rent, the cap percentage applies to the entire bundled amount.

You cannot unbundle a previously included service — say, splitting out a parking charge — and then apply the percentage only to the "rent" portion. That's treated as an unlawful increase.

Can You Increase by Less Than the Cap?

Yes. You can apply any amount up to the maximum. But any unused room is permanently forfeited. If your cap is 2.3% and you increase by only 1.0%, the remaining 1.3% is gone — it cannot be carried forward or added to next year's increase.

This means the choice is usually all-or-nothing. Applying the full allowable increase is the most common approach, since the only alternative is leaving money permanently on the table.

The RTB Online Calculator

The Residential Tenancy Branch provides a free online rent increase calculator on the BC government website. You enter the current rent and the effective date year, and it returns the maximum allowable dollar increase.

The calculator is a useful cross-check, but it doesn't handle two things you still need to do yourself: verify that 12 months have passed since the last increase, and confirm the effective date is valid after accounting for deemed delivery and three full rental months.

For a complete walkthrough that ties the calculation together with notice timing, service rules, and proof of delivery, see the BC Rent Increases guide.

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