The quick read: Most DSCR lenders want a St. Louis rental's rent to cover the full monthly payment, and a consumer guide puts the usual floor at around 1.25, but each lender sets its own minimum. In St. Louis the input most likely to move that ratio after closing is the tax line. Missouri sets new assessed values as of January 1 of each odd-numbered year and carries them through the even year, so a 2026 tax bill on a Tower Grove South four-family or a Central West End walk-up reflects a January 1, 2025 value and resets as of January 1, 2027. Short-term rental income is the second boundary: the city's ordinance bars permits on parcels benefiting from tax abatement or TIF, and the city's own notice says a court order paused enforcement of its permit rules, so the status needs checking before any nightly rent goes into the ratio.
What DSCR do lenders require on a St. Louis rental property?
Most DSCR lenders want a rental property's monthly rent to cover the full monthly payment with some cushion, in this city as elsewhere, and NerdWallet's DSCR guide (updated Jul 17, 2026) says a ratio of around 1.25 or higher is generally needed. That is a consumer guide's typical figure, not a market rule, and each lender publishes its own minimum.
NerdWallet defines the calculation as a property's monthly rental income, or projected income, divided by the loan payment, which includes principal, interest, taxes, insurance and homeowners association fees. The same guide says lenders verify the ratio through a property appraisal, generally want a credit score of at least 620 and a down payment of at least 20%, expect three to six months of mortgage payments in reserve, and want a rent-ready property. It also says most of these loans come with prepayment penalties. Run your own numbers in the DSCR calculator.
The loan is business-purpose credit. The CFPB's official commentary to Regulation Z says credit to acquire, improve, or maintain rental property (regardless of the number of housing units) that is not owner-occupied is deemed to be for business purposes, and that a property the owner expects to occupy for more than 14 days in the coming year cannot be considered non-owner-occupied. A St. Louis investor planning to live in one unit of a two-family is in a different loan.
Typical minimum DSCR (NerdWallet, updated Jul 17, 2026): around 1.25 or higher Typical minimum credit score (NerdWallet, updated Jul 17, 2026): at least 620 Typical down payment (NerdWallet, updated Jul 17, 2026): at least 20% Typical reserves (NerdWallet, updated Jul 17, 2026): three to six months of mortgage payments
Which published figures go into a St. Louis DSCR quote?
A DSCR quote in the city rests on three kinds of published figure: lender-side terms that only some lender types publish, Missouri's assessment rules that set the tax inside the payment, and the city's occupancy and short-term rental rules that decide which rent is countable. The table puts each one beside its source.
Table: St. Louis DSCR inputs and where each figure comes from
| Input | Figure or rule | Source (date) |
|---|---|---|
| Input Minimum DSCR, DSCR investor lender | Figure or rule Around 1.25 or higher | Source (date) NerdWallet DSCR guide (updated Jul 17, 2026) |
| Input Minimum amortizing DCR, 5 to 50 units | Figure or rule 1.25x | Source (date) Freddie Mac Conventional Small term sheet (4/26) |
| Input Assessment date for real property | Figure or rule January 1 of each odd-numbered year, carried to the even year | Source (date) RSMo 137.115 |
| Input Assessment ratio, residential including apartments | Figure or rule 19% of true value | Source (date) RSMo 137.115; STC assessor manual (rev. 10-15-2025) |
| Input Assessment ratio, commercial | Figure or rule 32% of true value | Source (date) State Tax Commission definitions |
| Input Rental unit before a new tenant moves in | Figure or rule Certificate of Inspection required | Source (date) City of St. Louis Building Division |
| Input Short-term rental on an abated or TIF parcel | Figure or rule No permit granted | Source (date) City of St. Louis STR permit FAQ, Ordinance 71729 |
For a building of five or more units, Freddie Mac's Conventional Small term sheet (4/26) covers predominantly market-rate properties of 5 to 50 units with loans of generally $2 million to $10 million and a 1.25x minimum amortizing DCR. For a two-family, three-family or four-family, the terms are each DSCR lender's own, so ask for the minimum ratio, the rate and the prepayment schedule in writing.
How does Missouri's odd-year reassessment change the tax line?
Missouri's reassessment changes the tax line because Section 137.115 of the Revised Statutes of Missouri says new assessed values are determined as of January 1 of each odd-numbered year and carry into the following even year, so a St. Louis rental bought in 2026 is taxed on a January 1, 2025 value until the 2027 reassessment.
The State Tax Commission of Missouri's definitions page says residential property is assessed at 19% of its true value in money and that the odd-year value is used for the following even year unless there has been new construction or improvement. Its assessor manual (revised October 15, 2025) confirms that apartments are subclassified as residential. The statute also says improvements are valued as though completed as of January 1 of the preceding odd-numbered year, so a gut rehab finished in 2026 can raise the roll value before the 2027 reassessment.
That makes the seller's bill a poor guide. A price well above the assessor's value tells you the 2027 value may rise, and the payment a DSCR lender divides into rent rises with it. Ask each lender whether it escrows taxes on the current bill or on an estimate, and run the ratio at the higher figure.
Illustrative example (our arithmetic, not a quote): a Tower Grove South brick four-family rents for $1,000 a unit, or $4,000 a month. The full monthly payment, including $400 of taxes, is $3,000.
- On the 2026 tax bill, $4,000 divided by $3,000 is a DSCR of about 1.33.
- If the 2027 reassessment lifts the tax to $550 a month, the payment becomes $3,150 and the DSCR falls to about 1.27.
- If it lifts the tax to $700 a month, the payment becomes $3,300 and the DSCR is about 1.21, below a 1.25 floor.
Does Missouri's 15% rule limit the 2027 reset in St. Louis?
Missouri's 15% rule limits procedure rather than value: Section 137.115.10 says an assessor must physically inspect a residential parcel, with written notice to the owner, before raising its assessed value by more than 15% since the last assessment, excluding new construction and improvements, so a properly inspected parcel can rise further.
The rule matters on appeal. The State Tax Commission's April 22, 2025 order regarding Jackson County says the Commission has consistently ruled that increases must not exceed 15% from the last assessment when the assessor fails to comply with the notice and inspection provisions. That order concerns a different county, but the statute it applies covers every Missouri assessor, including the City of St. Louis.
The statute adds a rule that bites in St. Louis specifically. For residential property within a charter county or a city not within a county, which describes St. Louis, a valuation made by a computer-assisted method puts the burden of proof on the assessor at any hearing or appeal, and the evidence must include purchase prices from sales of at least three comparable properties, generally within one mile. If your 2027 notice looks high, that is the standard the assessor has to meet.
For underwriting, keep it simple: base the DSCR on a tax line built on your purchase price, and treat the 15% procedure as a reason to read the notice and appeal on time, not as a cap to rely on.
Can short-term rental income count on a St. Louis DSCR loan?
Short-term rental income can count only where the city's rules allow it, and the city's own pages leave that status open: Ordinance 71729 bars permits on parcels actively benefiting from tax abatement or TIF, while a city notice says a court order paused enforcement of the ordinance's permit requirements.
The city's FAQ says Ordinance 71729 became law in November 2023, requires a permit for every short-term rental, and denies permits to any unit with a minimum stay under two nights or on a parcel actively benefiting from tax increment financing or tax abatement. It caps the number of short-term rentals in multifamily structures, limits an owner to four non-occupied permits, and says a non-occupied short-term rental needs a business license and that the property will be taxed at a commercial rate. The State Tax Commission assesses commercial property at 32% of value against 19% for residential, so that sentence alone can change the payment.
The enforcement status is the open question. The city's notice, updated May 5, 2025, says a court order prohibited the city from enforcing Ordinance 71729, that the order was extended for fifteen additional days, and that while the order is in effect the city will not enforce the permit requirements. The notice does not say what happened after that. Do not assume the rules are suspended or fully in force; confirm the current status with the Building Division before a lender sees nightly income. Our guide to DSCR loans on short-term rentals covers how lenders size nightly rent where it is allowed.
The abatement line matters for any rehabbed building. If the parcel carries a tax abatement, it cannot hold a short-term rental permit under the ordinance's text, and when the abatement ends the tax line rises, which belongs in the DSCR either way.
What does St. Louis's building stock mean for DSCR financing?
Recent permits across the metro are mostly single-family, with apartment buildings that are small by big-city standards: the Census Bureau's 2025 annual file for the St. Louis MO-IL metro shows 4,142 one-unit buildings and 101 buildings of five or more units holding 1,523 units, about 15.1 units per building.
The same 2025 annual file lists 117 two-unit buildings with 234 units and 44 three- and four-unit buildings with 167 units. These are permit authorizations for a two-state metro, not completions and not the city alone. The read for a DSCR investor is that the two-to-four-unit stock that fills Tower Grove South, Benton Park and Dutchtown is mostly older buildings rather than new construction, as are the Central West End's pre-war walk-ups, which is why condition and occupancy paperwork matter as much as rent.
The city requires that paperwork. Its Building Division says a Certificate of Inspection must be obtained before a rental unit is occupied, that a reinspection is required every three years or upon a change in occupancy for rental units, and that a certificate is valid for 12 months. A unit that cannot be legally re-leased cannot carry rent in a DSCR file, so ask the seller for current certificates on every unit. For financing a rehab before the DSCR loan, see our guide to financing a brick two-family rehab in St. Louis.
5+ unit buildings permitted, St. Louis metro, 2025 (Census BPS): 101 Units in those buildings (Census BPS, 2025): 1,523 Average units per 5+ building (our arithmetic): about 15.1
How do you get lenders competing for a St. Louis DSCR loan?
Lenders compete on a DSCR loan in the city when each one sees the same complete package, including a rent roll with occupancy certificates, any abatement or TIF on the parcel, a tax estimate built on your price and the 2027 reassessment, and long-term leases rather than unconfirmed nightly income, so their quotes differ on price and terms.
YieldStack is a commercial mortgage brokerage. Software matches the deal against 20,000+ loan programs and compares the options; human brokers structure the deal, negotiate on the borrower's side and carry it toward closing. YieldStack reports a median first offer in under an hour, from an institutional lender. Every credit decision is made by the lender; YieldStack arranges the introductions and negotiates on the borrower's side, and no loan, rate, or closing is guaranteed.
For a St. Louis rental, the package that gets clean quotes covers the facts the local rules turn on:
- Rent roll by unit, with lease dates and each unit's Certificate of Inspection
- Current tax bill, the assessor's current value and your estimate at the purchase price
- Any tax abatement or TIF on the parcel, with its end date
- Short-term rental permit status, if any nightly income is in the history
- Insurance quote and the purchase contract or payoff statement
- Target loan amount, hold period and the prepayment penalty you can accept
When it is ready, send the St. Louis deal for review. It costs Zero upfront to submit a deal and review offers; YieldStack's broker fee is 0.50–1.00% of the loan amount and is paid only at closing. Local context is on the St. Louis market hub and the Missouri market hub.
The bottom line
Most DSCR lenders want a St. Louis rental's rent to cover the full payment, with around 1.25 a common floor. The local risk is the tax line: Missouri resets values as of January 1, 2027, so build the payment on your price, not the seller's bill. Count long-term leases with current inspection certificates, and leave nightly income out until the city's short-term rental status is confirmed.