Rental Income Qualifying Calculator
Every Canadian lender uses a different formula to credit rental income toward your qualification. One might give you $1,600/month; another might give you $0. See all four methods side by side.
Rental Income Qualifying Calculator
See how much rental income each Canadian lender method credits toward your mortgage qualification.
| Method | How It Counts | Income Credited | Available For |
|---|---|---|---|
| 50% Add-Back | 50% of gross rent added to gross income | $1,600/mo | Insured + uninsured (all lenders) |
| 80% Offset | 80% of rent offsets PITH; shortfall = debt, surplus ignored | -$240/mo (adds to TDS) | Insured (CMHC default) |
| DCR 1.10 (Rental Worksheet) | Rent must be ≥1.10× PITH. Net cashflow added as income. | $400/mo | Uninsured only |
| DCR 1.00 (Monoline) | Rent must ≥ PITH. Surplus added as income. | $400/mo | Uninsured monolines |
Best method gives you $1,600/mo qualifying income boost. A broker knows which lenders apply each method.
A broker will confirm this with real lender quotes — for free.
The Four Main Rental Income Methods in Canada
Canadian lenders don't agree on how to count rental income. There are four primary frameworks, each used by different lender types:
1. 50% Add-Back (universal)
Takes 50% of gross rent and adds it to your total income. Used by all CMHC-insured lenders and most Big 6 banks. Simple, predictable, conservative. Reduces effective rental income credit by half but nothing is counted as debt.
2. 80% Rental Offset (CMHC default for rentals)
Takes 80% of gross rent, subtracts PITH (principal + interest + property tax + heat). If the result is positive, the property is "washed" (neutral to qualification). If negative, the shortfall is added to TDS. Surplus is ignored, which is worse than add-back for strong rentals but better for weak ones.
3. DCR 1.10 Rental Worksheet (uninsured monolines)
Requires Debt Coverage Ratio of 1.10 (rent ≥ 110% of PITH). If the property passes, 100% of net cashflow (rent − PITH) is added as qualifying income. This is typically the most generous for strong cashflow-positive rentals.
4. DCR 1.00 (alternative monolines)
Requires only DCR 1.00 — rent ≥ PITH. Some monolines (MCAP, Strive, RFA) and most B lenders use this. More forgiving on marginal rentals but less commonly available for insured or A-tier mortgages.
Choosing the Right Lender for Your Rental
- Cashflow strong (DCR 1.30+) — DCR 1.10 monoline lenders give highest qualifying income
- Cashflow moderate (DCR 1.05–1.15) — 50% add-back from a Big 6 is safer; DCR methods may fail
- Cashflow weak (DCR 0.95–1.05) — 80% offset from a CMHC-insured lender is probably best; the property washes even if it doesn't add income
- Cashflow negative (DCR < 0.95) — you'll need to show other income; rental may be treated as a liability across all lenders
- Multi-rental portfolio (3+ rentals) — portfolio lenders (Equitable, Home Trust commercial, monolines) use blended DCR or portfolio cashflow approaches
Why This Matters at Renewal
Rental property owners often face a renewal problem: taxes, insurance, and interest rates have risen sharply since 2020, but rents haven't kept pace in many Canadian markets. This can push a property from DCR 1.30 (2020) to DCR 1.05 (2026) — too low for rental worksheet methods. If your original lender used a DCR method, you may no longer pass their criteria at renewal for the same mortgage.
The workaround: straight-switch renewals are exempt from stress-test requalification under the November 2024 OSFI update. You can move your rental to a lender that still uses 50% add-back without redoing the full rental worksheet. A broker can find the lenders that match.
Documentation You'll Need
- T1 General with Statement of Real Estate Rentals (T776) — two years if possible, shows historical rent and expenses
- Current signed lease(s) or 12 months of deposit history to validate current rent
- Property tax bill for the rental
- Insurance declaration page (landlord policy)
- Condo fees statement if applicable
- Mortgage statement for existing rental mortgage
Frequently Asked Questions
What is the 50% add-back method for rental income? +
The 50% add-back method credits 50% of gross rental income as additional qualifying income. If your rental property earns $3,200/month gross rent, $1,600 is added to your other income. This is the most conservative and widely accepted method — all insured (CMHC/Sagen/CG) lenders and most uninsured Big 6 banks use it by default.
How does the 80% offset method work? +
The 80% offset method takes 80% of gross rent and applies it against the rental property's PITH (principal + interest + property tax + heat). If rent × 80% is greater than PITH, the property is 'self-sustaining' and adds nothing to debt. If rent × 80% is less than PITH, the shortfall is added to your TDS as a debt. Surplus is ignored — no income boost.
What is a Debt Coverage Ratio (DCR)? +
DCR = Gross Rent ÷ PITH. A DCR of 1.10 means rent is 110% of property carrying costs. Monoline lenders use DCR 1.10 (rental worksheet) as the minimum threshold to count rental income as a positive income contribution. Some monolines (Strive, RFA, CMLS) accept DCR 1.00. If DCR is below 1.00, the rental is losing money and becomes a debt liability.
Which rental income method gives me the most qualifying income? +
It depends on your numbers. For highly cashflow-positive rentals (rent ≫ PITH), DCR 1.10 rental worksheet gives the most because net cashflow is added 100%. For moderately positive (rent just above PITH), 50% add-back wins. For cashflow-negative rentals, no method helps — you lose qualifying capacity. Run all four in this calculator to find your best match.
Can I use rental income from a basement suite on my principal residence? +
Yes — most Canadian lenders accept basement/rental suite income on owner-occupied properties. CMHC-insured mortgages allow 50% add-back of legal suite income. Some uninsured lenders accept 100% of documented rent if the suite is legal (registered with the municipality) and has a lease. Illegal suites are usually excluded entirely.
Related Guides
Investment Property Renewal
Renewing a rental mortgage — rental offset vs. add-back rules.
Investment Property Renewal (Detailed)
Deeper dive on rental qualification and A vs. B-lender options.
Affordability Requalification Calculator
Re-test your borrowing capacity before switching lenders.
B-Lender Renewals
Alternative lenders for bruised credit, self-employed, or rentals.
Self-Employed Renewal
BFS income, stated income, and lender-fit for self-employed borrowers.
All Renewal Calculators
Payment, stress test, switch break-even, prepayment — all in one place.
Landlord? Talk to a Broker Who Knows Rentals
A licensed mortgage broker knows which lenders use which rental income method, and can structure a renewal or refi that maximises your qualifying income — free.