Rental investment simulator in Quebec

Many real estate tools stop at a gross-yield logic: annual rent divided by purchase price. That is useful for a quick screen, but it is not enough to decide whether a duplex or triplex is actually worth buying.

WiseRock is built for a broader reading of the file. The simulator helps you analyze a rental purchase the way an investor wants to analyze it: financing, acquisition costs, vacancy, operating expenses, performance metrics, and scenario comparison.

In other words, the rental profitability calculator is only one part of the answer. The real question is whether the file still holds once mortgage payments, welcome tax, legal fees, and prudent assumptions are all included.

The rental investment simulator lets you measure several layers of the same project. First, it estimates the financing structure: purchase price, down payment, rate, amortization, and how those choices affect mortgage payment.

Second, it connects financing to operations. Rents, vacancy, taxes, insurance, and operating expenses help estimate real estate cash flow and reveal whether the property is only attractive in theory or genuinely workable over time.

Finally, it groups the metrics investors use to compare opportunities: net yield, cap rate, cash-on-cash return, repaid capital, total acquisition cost, and actual cash required up front.

For a DIY investor reviewing an early duplex or triplex deal, the right workflow is to start with one realistic version and then duplicate it into a prudent version. The simulator is designed to make that process faster without forcing you to rebuild the file manually.

Start with the target purchase price, a believable down payment, the mortgage rate you can likely obtain today, and the amortization period you actually plan to use. Then add defendable rents rather than the most flattering listing number in the market.

The third step is to include the costs the property must absorb: taxes, insurance, condo expenses where relevant, other operating costs, and vacancy. That is when an income-property purchase simulation becomes genuinely useful, because it shows quickly whether your safety margin is real.

Total acquisition cost is never limited to the asking price. For a Quebec investor, land transfer tax, legal fees, and financing-related costs can materially change the quality of a deal.

Welcome tax should be treated as a real acquisition cost. It does not tell you whether the property performs well, but it directly changes how much capital you tie up at the start and therefore affects your real return profile.

CMHC premium or related financing taxes play a similar role: they do not improve the asset itself, but they reshape the debt structure and the cash burden at closing. The simulator helps place those costs where they belong, as decision inputs rather than administrative afterthoughts.

When you want to refine the financing side further, continue with the mortgage calculator, welcome tax calculator, or CMHC premium calculator depending on which part of the file still needs work.

Real estate cash flow is the money left over, or missing, each month after rental income and property-related outflows. It is often the fastest metric for seeing whether a deal feels comfortable or fragile.

Yield is more useful for comparison. It gives you a cleaner performance snapshot, but it does not replace cash flow. A property can still look acceptable on an annual ratio while remaining uncomfortable because debt absorbs too much monthly liquidity.

Cap rate helps you read the property more independently from financing. Cash-on-cash answers a more concrete question: what return does the project generate on the cash you actually put into the deal?

The best reading combines all four. If the yield looks respectable but cash flow collapses as soon as you add a prudent assumption, the simulator is doing its job by exposing the risk before purchase instead of after closing.

A homemade spreadsheet remains flexible, but it becomes fragile fast: one missed assumption, one copied formula, or one forgotten acquisition cost can distort the entire file. A single-purpose calculator has the opposite weakness: it answers one narrow question without connecting the rest of the deal.

WiseRock sits in the more useful middle ground for rental investors. You keep a structured simulation, visible assumptions, multiple scenarios, and charts that let you compare results without losing the link between financing, cash flow, and total acquisition cost.

Take a simple example. You are analyzing a Quebec duplex priced at $525,000 with a $105,000 down payment, a 5.19% mortgage rate, and a 25-year amortization. Target rents are $1,450 and $1,550 per month, or $3,000 total.

You then add $4,200 in municipal taxes, $480 in school taxes, $1,600 in insurance, $2,400 in maintenance and other costs, plus a 4% vacancy assumption. You also plan for $3,500 in legal and miscellaneous closing fees, with additional municipal or financing costs layered in as needed by the deal structure.

In that realistic version, the monthly mortgage payment lands around $2,488. Once operating costs and vacancy are included, estimated monthly cash flow remains slightly negative at roughly $332. That is not automatically a hard no, but it is a clear signal that price, down payment, or rent assumptions need another pass.

Now move to a prudent scenario: rate at 5.69%, rents reduced by 5%, and expenses increased by 10%. The mortgage payment rises toward $2,610 per month and cash flow can slide to roughly -$670 per month. That is where the simulator becomes valuable: it shows the gap between a workable-looking deal and a more demanding version of the same file.

This page is built first for DIY investors reviewing an early duplex, triplex, or similar small income-property purchase and wanting a more disciplined analysis than a rough spreadsheet or mental estimate. It also works for growing investors who compare multiple opportunities, revisit financing, or stress-test a file before making an offer.

If your goal is to see quickly whether an income property deserves more of your time, this simulator is built for that job. It helps move you from intuition to a clearer decision framework with visible assumptions and a prudent scenario that forces honesty.

WiseRock is a Quebec-first rental investment analysis platform for real estate investors. We build practical, transparent calculators shaped around Quebec and Canadian realities so investors can compare an acquisition, read financing choices, and reduce decision risk.

Our approach stays intentionally simple: visible assumptions, investor-friendly language, immediately usable outputs, and complementary tools when you want to push the analysis further.