Every first-rental financing question collapses into one comparison: conventional, which underwrites you, versus DSCR, which underwrites the property. Investors argue about it like it is a matter of taste. It is not. It is a paperwork question, and the answer is usually obvious the moment you look at your own file honestly. W-2 income with room left in your debt-to-income ratio? Conventional is cheaper, and you should take it. Self-employed, already carrying a few doors, or buying in an entity? DSCR, and the premium you pay is the price of getting to buy at all.
What follows is the framework in the order the questions actually matter, the real trade-offs on each side, and the math on an example deal so you can see precisely what the rate spread costs you per month.
the core difference
Conventional financing qualifies your personal balance sheet. The lender pulls two years of tax returns and W-2s, averages your income, adds every monthly obligation including the new mortgage, and computes a debt-to-income ratio. Rent from the property helps, but only partially: lenders typically credit around 75% of documented market rent and hold the rest back for vacancy and repairs. The house is collateral. You are the one being judged. A DSCR loan reverses that. The lender asks whether the rent covers the payment, qualifies on that ratio plus your credit score and liquidity, and never opens a tax return. The full mechanics live in DSCR loans explained; the consequence is the part that decides your strategy. Under conventional, your income is the ceiling. Under DSCR, the property's rent is.
when conventional wins
The conventional loan is cheaper, and cheap compounds. On an investment purchase you should expect a rate above the owner-occupied headline number, because investment-property pricing adjustments are real, but it still lands roughly half a point to a full point below what a DSCR lender quotes the same borrower on the same house. Call it around 7% conventional against around 8% DSCR in the current market, both moving constantly, both illustrative rather than a quote. On a $150,000 loan over 30 years that spread is about $998 a month of principal and interest against about $1,101 — roughly $103 a month, about $1,200 a year, every year you hold.
Two more advantages, both structural. There is no prepayment penalty on a standard conventional loan, so you can sell, refinance, or pay it down whenever the market hands you a reason, while DSCR loans almost always carry a step-down penalty across the first three to five years. And conventional guidelines let you finance up to around ten properties, which sounds generous and genuinely is, right up until the ratio test stops you at four.
That last clause is the entire catch. The ten-property allowance is conditional on your DTI holding, and DTI is what breaks first. Most investors never come close to the property cap. They hit the income wall years earlier, usually while every single unit they own is cash flowing fine.
when DSCR wins
You are self-employed. Conventional wants two years of business returns, and the same write-offs that make your business efficient make your qualifying income look thin. A contractor clearing real money can show a Schedule C number no conventional underwriter will lend against. A DSCR lender never asks the question.
You already own three or four doors. Each financed property adds its full payment to your DTI while returning only about 75% of its rent to your side of the ledger. Repeat that three or four times and the ratio saturates even on a portfolio that cash flows. This is the most common reason investors switch, and it arrives sooner than almost anyone expects.
You want title in an LLC on day one.Conventional loans close in your personal name. Deeding the property into an entity afterward can trip the due-on-sale clause in your note, and while lenders rarely call a performing loan over it, "rarely" is not a plan. DSCR lenders close in an entity routinely, usually with a personal guarantee from the members. Entity structure and its tax and liability effects vary by state, so run the structure past your own attorney and CPA before you build a plan around it.
You need speed. A DSCR file closes in roughly two to three weeks because there is far less to verify; conventional runs thirty to forty-five days. On a contested listing or a seller who needs out, that gap wins deals outright. Program-level detail — minimum ratios, LTV caps, credit and reserve requirements — is laid out in the DSCR loans guide.
the decision tree
Ask these four in order and stop at the first no. The first no is your answer.
The order is doing work here. Most people start at question four, because entity structure and asset protection are the enjoyable things to think about, and end up paying a point for a wrapper they could have added later. Start at question one. If you have documented income, real DTI margin, this is door one or two, and you are comfortable holding title personally, take the conventional loan and stop shopping. If any answer breaks, DSCR is not a consolation prize — it is the correct instrument for the file you actually have. Either way, run the property both ways before you commit: the DSCR calculator gives you the ratio and the payment at whatever rate you want to test.
the hybrid path
For most people the right answer is not one loan, it is a sequence. Use the cheapest money first, while you still qualify for it. Start with an owner-occupied purchase: a house hack puts you in a two-to-four unit building on first-time-buyer terms, at a down payment and rate no investor loan will ever match. Then take one or two more properties on conventional investment financing while your ratio has room. Somewhere around the third or fourth door the DTI math stops cooperating. That is a milestone, not a failure.
When it happens, do not churn what you already own. A 30-year fixed conventional loan at a decent rate is an asset, and refinancing it into a more expensive DSCR loan to "clean up" your balance sheet usually costs more than it frees. Layer instead: leave the conventional loans in place and buy new properties on DSCR. Some entity-held DSCR loans do not report on your personal credit, which can preserve DTI room for a future conventional purchase, but that varies by lender and is not something to assume. Ask before you build a plan on it.
costs compared on an example deal
Same house, same buyer, two loans. A $200,000 rental with 25% down — $50,000 — leaving a $150,000 loan on a 30-year term. Taxes run $210 a month, insurance $100, no HOA. Market rent is $1,800. On the conventional loan at around 7%, principal and interest come to about $998, the full payment is $1,308, and you keep roughly $492 a month before setting anything aside for vacancy, repairs, and management. On the DSCR loan at around 8%, principal and interest run about $1,101, the full payment is $1,411, and you keep about $389. Both deals work. One keeps about $103 more every month.
Now extend it. Over a five-year hold that gap compounds to roughly $6,000 in extra payments: real money, not deal-breaking money. Then price the prepayment penalty. On a 5-4-3-2-1 step-down, exiting in year two costs 4% of a balance still near $147,000 — about $5,900. If you expect to refinance or sell early, the penalty structure matters more than the rate, so buy a shorter step-down rather than buying the rate down. If you expect to hold a decade, the rate matters more and the penalty expires on its own. Closing costs land in the same neighborhood on both, though DSCR lenders charge origination points more often, so compare the whole stack instead of the headline number.
And notice what the example cannot show you: whether you can actually get the conventional loan. That is the reason the decision tree runs in the order it does. The cheapest loan you do not qualify for is not cheap, it is unavailable, and the deal goes to whoever underwrote the property instead of arguing about their own tax returns. Know which of the two loans your file supports, know the property's numbers before you call anyone, and the financing question answers itself.
Three listings from the catalog right now with rent, taxes, insurance, and DSCR already modeled at current rates — the numbers you need before you pick a loan, computed the day the listing went live.
