Blog
Deep dives on rental property analysis, real estate math, and underwriting best practices from the team behind TrueCap.
Rental Underwriting
Topic guide →How to underwrite a rental property — cap rate, cash-on-cash, DSCR, NOI, and the pro forma that ties them together.
How to underwrite a rental property in 60 seconds
The five numbers, four metrics, and two sanity checks every investor uses to triage a deal — without a spreadsheet.
May 24, 2026 · 9 min read
What's a good cap rate for rental property in 2026?
Benchmarks by market type, the framework professionals actually use to evaluate cap rate, and why pre-2022 intuition is silently buying investors into negative leverage.
May 24, 2026 · 9 min read
Cap rate vs cash-on-cash vs DSCR: which one actually matters?
Three different metrics, three different jobs. A plain-English guide to when each one matters and the 2026 negative-leverage trap most investors miss.
May 24, 2026 · 8 min read
Cash-on-cash vs IRR: which one tells the truth?
Cash-on-cash and IRR are both return metrics, but they answer completely different questions. When each one is right, when each one lies, and which to trust.
May 24, 2026 · 7 min read
How to calculate NOI (net operating income) on a rental property (2026)
NOI = effective gross income minus operating expenses, before the mortgage — and it's the number cap rate, DSCR, and 5+ unit valuation are all built on. The formula, a full line-by-line…
Jun 16, 2026 · 10 min read
Gross rent multiplier (GRM) explained: how to screen rentals fast (2026)
GRM = price ÷ annual gross rent — the fastest screen in real estate and the first number to compute on any listing. The formula, a three-listing screen, the cap-rate bridge ((1 − expense…
Jun 17, 2026 · 10 min read
How to read a rental property pro forma (and the 7 lies inside most of them)
A pro forma is a seller's projection of how a rental property will perform — and it's almost always optimistic. Here's how to translate seller pro formas into real numbers, and the 7 line…
May 26, 2026 · 9 min read
How to spot a bad rental deal in 60 seconds — 7 red flags
Seven red flags that tell you a rental doesn't pencil — before you waste hours running the full underwrite. The triage every experienced investor does in their head.
May 24, 2026 · 8 min read
The 50% rule for rentals — is it still useful in 2026?
The classic 50% rule says operating expenses run ~half of gross rent. Honest take on when it works as a triage tool, when it lies, and what to use instead.
May 25, 2026 · 6 min read
Vacancy rate for rentals: what to assume in 2026 (and why 5% is usually a guess)
Physical vs economic vacancy, the turnover math that derives the number instead of guessing it, what 5 points does to cash flow and DSCR, and why your DSCR lender ignores vacancy entirely.
Jun 7, 2026 · 10 min read
CapEx and maintenance reserves: how much to actually budget for a rental (2026)
Percent-of-rent defaults understate capex on exactly the properties that can least afford it. The component-lifespan method with 2026 prices, an age-weighted reserve formula, and what honest…
Jun 11, 2026 · 10 min read
Rental property insurance: landlord coverage and cost in 2026
The most-underestimated line in a 2026 underwrite. Landlord (DP-3) vs homeowners coverage, what loss-of-rent actually protects, real 2026 cost ranges (~$1,200–$1,900 and climbing), how to…
Jun 23, 2026 · 11 min read
The 1% rule for rental property: does it still work in 2026?
The fastest screen in real estate — monthly rent ≥ 1% of price — and why 7% rates quietly moved the bar. The GRM bridge (a 1% deal is a GRM of ~8.3), the break-even ratio that climbed from…
Jun 23, 2026 · 10 min read
Break-even occupancy: how much vacancy a rental can survive (2026)
Cap rate tells you what a rental earns; break-even occupancy tells you how much can go wrong before it stops paying for itself. The formula — (operating expenses + debt service) ÷ gross…
Jun 26, 2026 · 10 min read
Operating expense ratio (OER): what's a good one for a rental? (2026)
The metric appraisers reach for first — operating expenses ÷ effective gross income — and the hinge that sets NOI, cap rate, and value. The formula, the four costs that aren't operating…
Jul 6, 2026 · 11 min read
Return on equity (ROE) on a rental property: the lazy-equity test (2026)
Cash-on-cash tracks your original down payment forever; return on equity tracks what the equity you hold today is actually earning — and on a rental you've owned a while, only the…
Jul 1, 2026 · 11 min read
Rental Property Financing
Topic guide →Financing a rental — down payment, PITI, DSCR loans, closing costs, and refinancing — with the math worked out.
PITI explained: the real monthly payment on a rental (2026)
P&I isn't your real payment — PITI is: principal, interest, taxes, and insurance. On a $250k rental at 7% with 25% down, taxes and insurance pile $400/month on top of the loan — 32% more —…
Jun 20, 2026 · 11 min read
How much money do you need to buy a rental property? Cash-to-close worked at $150K, $300K, and $500K
Total cash is 1.4-1.7x the down payment, not 20% plus a bit — $50,744 for a $150K rental, $89,388 for a $300K, $142,231 for a $500K, itemised down to the tax escrow cushion. Includes the two…
Aug 2, 2026 · 12 min read
How much down payment do you need for an investment property? (2026)
15% down on a single-family rental, 25% on a 2–4 unit — but only if you don't live in it. The full 2026 down-payment menu, the no-PMI rule, and worked cash-on-cash and DSCR math on a $250k…
Jun 18, 2026 · 11 min read
Are mortgage points worth it on an investment property? (2026)
Points trade cash at closing for a permanently lower rate. At 2026 pricing the break-even runs about five years and the implied return about 20% a year — but only while you keep the loan.…
Jun 29, 2026 · 11 min read
DSCR loans explained: what they are, when they make sense, what they cost in 2026
DSCR programs primarily use property coverage instead of personal DTI as the main ratio, while borrower and property checks still apply. Learn the costs and trade-offs.
May 24, 2026 · 10 min read
How to refinance a rental property — rate-and-term, cash-out, and DSCR options
Step-by-step on refinancing a rental property: when refi makes sense, rate-and-term vs cash-out, LTV limits, DSCR loans, the break-even math, and the 5 mistakes most investors make.
May 26, 2026 · 10 min read
Closing costs on an investment property — the full breakdown (2026)
Every line item in investment-property closing costs, with real 2026 dollar figures on a $250k rental. Lender fees, title, transfer taxes, prepaids — what's negotiable, what isn't, and how…
Jun 9, 2026 · 11 min read
Cash-out refinance vs HELOC on a rental: which pulls equity better in 2026?
Two ways to pull equity from a rental — and in 2026 they aren't interchangeable. The investment-property LTV and rate reality, the cheap-first-mortgage trap (a refi resets your whole 3.5%…
Jun 23, 2026 · 11 min read
Seller financing and subject-to: creative deals explained (2026)
When 7% bank loans kill the deal, creative financing moves it. How seller financing and subject-to work, the due-on-sale risk that defines subject-to, where Dodd-Frank does and doesn't apply…
Jun 23, 2026 · 11 min read
Hard money vs DSCR: which loan product is right for your next deal in 2026
Hard money and DSCR loans solve different problems. Hard money is short-term capital for a deal you'll rehab and exit; DSCR is long-term capital for a rental you'll hold. Picking the wrong…
Jun 7, 2026 · 11 min read
Debt-to-income ratio for an investment property: how lenders count rental income (2026)
Every investor assumes the rent "covers itself" on a loan application. It doesn't. Lenders credit 75% of gross rent, then subtract the property's full payment — so a…
Jul 4, 2026 · 11 min read
Negative leverage in real estate: when borrowing lowers your return (2026)
"Use leverage, returns go up" is only true when the asset out-earns the debt — and in 2026 it usually doesn't. The one number that sets the sign (the loan constant, not the rate),…
Jun 28, 2026 · 11 min read
Rental Property Tax
Topic guide →Rental property taxes — depreciation, Schedule E, the 1031 exchange, and the deductions that shelter your cash flow.
Rental property tax deductions — the 14 every investor should know
Every deductible expense on a rental property, organized by Schedule E line. Worked examples, common-mistake callouts, and the depreciation move that often saves more than all other…
May 26, 2026 · 11 min read
Depreciation recapture on rental property: how the tax works when you sell (2026)
Depreciation lowers your basis every year — and recapture taxes the gain that creates when you sell, at up to 25%. A full worked example on a $250K rental sold for $360K, why the real bill…
Jun 14, 2026 · 11 min read
Schedule E for rental property: a line-by-line walkthrough (2026)
Every Schedule E line that matters, a full worked example on a $250K rental, and the exact bridge between +$139/month of cash flow and a $3,703 paper loss — plus the $25K passive loss…
Jun 12, 2026 · 10 min read
1031 exchange basics for individual rental investors
How a 1031 exchange actually works in 2026 — the 45-day and 180-day windows, qualified intermediary requirement, like-kind rules, boot, reverse exchanges, and when it's worth the complexity.
May 25, 2026 · 11 min read
Should you put your rental property in an LLC? (2026)
An honest answer to the most-asked entity question. What an LLC does (liability) and doesn't (cut your taxes), the Garn-St. Germain due-on-sale trap when you transfer a mortgaged rental, why…
Jun 23, 2026 · 12 min read
Bonus depreciation on rental property in 2026: the restored 100% deduction and what qualifies
Current IRS guidance restored 100% bonus depreciation for eligible property acquired and placed in service after January 19, 2025. The rental building itself usually does not qualify;…
Updated Aug 15, 2026 · 10 min read
Property tax reassessment: don't underwrite the seller's tax bill (2026)
The most expensive shortcut in underwriting is copying the property-tax line straight off the listing. Why the seller's bill reflects a capped, years-old assessment and an owner-occupant…
Jun 27, 2026 · 10 min read
Investing Strategies
Topic guide →Rental strategies — BRRRR, house hacking, Section 8, rehab, off-market sourcing, and single- vs multi-family.
The BRRRR method in 2026: the complete numbers walkthrough
Buy, rehab, rent, refinance, repeat — with real 2026 numbers. One full deal start to finish: refinance LTV limits, seasoning rules, DSCR qualification, and the two constraints on your…
Jun 7, 2026 · 11 min read
House hacking explained: how to (almost) live for free in a 2-4 unit
The actual math behind house hacking — FHA 3.5% down, owner-occupant rules, year-2 transition planning, and the deal types that make this strategy work in 2026.
May 25, 2026 · 9 min read
Is a duplex a good investment? The same $400,000 building, underwritten as a rental and as a house hack
A duplex is not one investment, it is two, and the loan application decides which you get. Conventional financing wants 25% down on a 2-4 unit investment purchase and 5% owner-occupied —…
Aug 5, 2026 · 13 min read
Section 8 rentals: how the math actually works in 2026 (pros, cons, underwriting)
How the voucher program actually pays — payment standards, FMR math, the two ceilings on your rent, NSPIRE inspection costs, and the five underwriting adjustments that decide whether Section…
Jun 10, 2026 · 11 min read
Single-family vs multi-family rental property — which actually wins?
The honest comparison: cash flow, cap rate, financing, tenant quality, exit liquidity, capex risk, and which property type fits your specific stage. Side-by-side numbers with 2026 financing.
May 27, 2026 · 11 min read
How to estimate rehab costs on a rental property — the honest framework
The framework experienced investors use: sq-ft pricing for cosmetic, kitchen, bath, systems work. Plus the 25% contingency rule and on-site walkthrough checklist.
May 27, 2026 · 12 min read
How to find off-market rental properties — 8 sources that actually work
The 8 sources serious rental investors use to find off-market deals — driving for dollars, direct mail, wholesalers, networking, public records, and the underrated channels most investors…
May 26, 2026 · 10 min read
Should I use a property management company? The actual math.
8-10% of rent + lease-up fees + maintenance markup — does paying a PM still beat managing yourself? The honest break-even math, plus when to switch each direction.
May 25, 2026 · 8 min read
House hack underwriting: how to know if a duplex, triplex, or fourplex actually beats renting
House hacking sounds great in a podcast and confusing in a spreadsheet. The honest math: your housing cost vs. renting the equivalent, factoring in down payment, mortgage paydown,…
Jun 7, 2026 · 12 min read
Short-term rental underwriting playbook: how to model an Airbnb in 2026
STR cash flow lives or dies on three numbers: ADR, occupancy, and operating expenses. Here's the full playbook for underwriting a short-term rental in 2026 — what data sources to use, what…
Jun 7, 2026 · 14 min read
The 70% rule for house flipping (and BRRRR): calculate an Offer Ceiling (2026)
The fastest offer screen in real estate — pay 70% of after-repair value, minus repairs — and what it's really doing under the hood. The Offer Ceiling formula worked on a $300K flip, a…
Jul 5, 2026 · 11 min read
Markets & Where to Buy
Topic guide →Choosing a rental market — cash-flow vs appreciation, the best states for investors, and city-level snapshots.
Best states for rental property investors in 2026
An honest ranking of the top 10 US states for rental investors — cap rates, property tax, income tax, landlord laws, and the trade-offs that decide which state actually fits your strategy.
May 25, 2026 · 12 min read
Cash flow vs appreciation: which rental strategy actually wins in 2026?
A 10-year side-by-side across three market types with 2026 borrowing costs — and the two return components most comparisons silently forget.
May 24, 2026 · 9 min read
Deal Analysis How-Tos
Topic guide →Step-by-step guides to the core rental calculations — cap rate, cash-on-cash, DSCR, ARV, and exit cap rate — with worked examples.
How to calculate cap rate (with worked examples) — 2026 guide
Cap rate = NOI ÷ purchase price. Learn the lender-style NOI convention, how vacancy and operating costs work, where CapEx belongs, and see three worked examples.
Jun 7, 2026 · 7 min read
How to calculate cash-on-cash return on a rental property — 2026 guide
Cash-on-cash return = annual cash flow ÷ total cash invested. It's the only metric that tells you the return on the dollars you actually put in. Here's the formula, what counts as 'total…
Jun 7, 2026 · 7 min read
How to calculate DSCR (debt service coverage ratio) — 2026 guide
DSCR = NOI ÷ annual debt service. It's the metric DSCR lenders use to qualify your loan. Here's the formula, what lenders include and exclude, three worked examples, and the difference…
Jun 7, 2026 · 8 min read
How to calculate ARV (after-repair value): the comps method, step by step (2026)
The number every flip and BRRRR model is built on—and one you cannot simply look up. Learn why ARV is a forecast, how renovated comps support it, how a 70%-rule Offer Ceiling and 75% LTV…
Jul 10, 2026 · 11 min read
Exit cap rate: how to pick the number that sets your sale price (2026)
The number most investors pick in four seconds and never revisit — the cap rate you assume a future buyer pays. Why exit-year NOI ÷ exit cap sets most of the return on a multi-year hold, a…
Jul 8, 2026 · 11 min read
How TrueCap classifies Buy Box fit
The cash flow, DSCR, cap-rate, and cash-on-cash thresholds behind TrueCap's Buy Box fit bands, plus how to read them.
Jun 7, 2026 · 10 min read
Due Diligence & Buying
Topic guide →Verifying a deal before you close — rent rolls, appraisals, market-rent estimates, and buying with tenants in place.
How to read a rent roll: verify a rental's income before you buy (2026)
A rent roll is where the seller's story meets the leases — and the gap is the deal. Why a fourplex that "grosses $63,600" is really collecting $42,900, how to split the…
Jun 30, 2026 · 11 min read
Investment property appraisals: how they work — and what to do when the value comes in low (2026)
The one number in every financed deal the investor doesn't control. Which forms get ordered (1004, 1025, and the 1007 rent schedule), how the lower-of rule turns a $228K appraisal on a $240K…
Jul 11, 2026 · 11 min read
How to estimate rent on a rental property (2026)
Rent is the input every metric leans on — and the one investors most often guess. The appraiser's comp-adjustment method with a worked grid, the GRM and 1% cross-checks that bound the…
Jun 25, 2026 · 11 min read
Buying a rental property with tenants in place: the lease, the estoppel, and the below-market rent math (2026)
Tenant-occupied listings look like day-one income — but the lease survives the sale in all fifty states, and the rent it carries is usually below market. What legally transfers with the…
Jul 13, 2026 · 11 min read
Tool Comparisons
Topic guide →Honest side-by-side comparisons of rental analysis calculators, deal-discovery platforms, and landlord software.
Best rental property calculator 2026: 7 tools compared
Honest 2026 ranking of the 7 most popular rental property calculators — TrueCap, DealCheck, BiggerPockets, Mashvisor, Stessa, Excel, and Roofstock — across free tier depth, pricing, mobile,…
Updated Aug 27, 2026 · 12 min read
Best free rental property calculator 2026: 5 tools that actually work for free
Honest 2026 ranking of the 5 best truly-free rental property calculators — TrueCap, BiggerPockets' free reports, Stessa's calculator, Excel templates, and Zillow's mortgage calculator. What…
Updated Aug 27, 2026 · 9 min read
Best rental property calculator for BRRRR investors (2026)
Honest 2026 ranking of the best calculators for BRRRR — TrueCap, DealCheck, BiggerPockets, and what makes a BRRRR-specific calculator different from a standard rental analyzer.
Jun 7, 2026 · 9 min read
Best rental analysis tool for house hackers (2026)
Honest 2026 ranking of the best calculators for house hackers — TrueCap, DealCheck, BiggerPockets, and what owner-occupant underwriting requires that standard rental calculators miss.
Jun 7, 2026 · 8 min read
Best short-term rental analysis tool 2026: 6 tools STR investors compare
Honest 2026 ranking of the best STR analysis tools — AirDNA for revenue data, TrueCap for underwriting, Mashvisor for market discovery, plus PMS platforms STR investors evaluate.
Jun 7, 2026 · 10 min read
7 Best DealCheck Alternatives for Rental Analysis (2026)
Seven real DealCheck alternatives with verified July 2026 pricing — TrueCap (that's us, disclosed), BiggerPockets' calculators, Stessa, Mashvisor, RentCast, Rentometer, and the spreadsheet…
Updated Aug 27, 2026 · 11 min read
Free BiggerPockets Calculator Alternatives (2026)
BiggerPockets' calculators stop after 5 free reports; the rest sits behind Pro at $390/yr. Six genuinely free alternatives ranked — TrueCap (that's us, disclosed), DealCheck's free Starter…
Updated Aug 27, 2026 · 10 min read
DealCheck vs BiggerPockets vs TrueCap: which rental calculator wins?
Honest 3-way comparison of DealCheck, BiggerPockets Calculator, and TrueCap. Free tier depth, pricing, projections, mobile, and which fits which investor.
Updated Aug 16, 2026 · 11 min read
DealCheck vs Stessa vs TrueCap: which one do you actually need?
A dated 3-way comparison of DealCheck, Stessa, and TrueCap. All three support acquisition analysis; Stessa also spans listing discovery and owned-property operations.
Updated Aug 27, 2026 · 11 min read
Roofstock vs Mashvisor vs PropStream: 3-way deal discovery comparison
Roofstock sells turnkey rentals. Mashvisor scores neighborhoods. PropStream finds motivated sellers. Honest 3-way comparison plus where TrueCap fits after they each find you a property.
Jun 7, 2026 · 10 min read
Stessa vs Avail vs Baselane: 3-way landlord ops comparison
Stessa spans acquisition through operations; Avail emphasizes leasing and rent collection; Baselane combines banking and bookkeeping. Updated with dated official sources.
Updated Aug 27, 2026 · 10 min read
Hostfully vs Hostaway vs Guesty: which STR PMS wins in 2026?
Honest 3-way comparison of Hostfully, Hostaway, and Guesty — channel managers, automation, pricing tiers, and which fits 1, 10, or 100 short-term rentals.
Jun 7, 2026 · 11 min read
More rental investing guides
Additional fundamentals and metric comparisons for screening rental opportunities.
What is a good rental yield? 2026 benchmarks, the gross-vs-net trap, and the financed test that actually decides
In most 2026 US markets, 8-12% gross yield ($667-$1,000 of monthly rent per $100K of price) is where leveraged deals start to pencil — but the number alone can't clear a deal. Gross and net…
Jul 22, 2026 · 10 min read
Cap rate vs gross yield vs GRM: three quotes for the same building — and when each one lies
Gross yield, GRM, and cap rate measure the same income at different depths — two are literally the same fraction flipped. All three worked on a $250K duplex (11.5% gross, 8.7 GRM, 6.4% cap),…
Jul 21, 2026 · 10 min read
2% rule vs 1% rule: which rental screen actually applies in 2026?
The 1% and 2% rules are the same rent-to-price screen with the bar at two heights — and knowing that tells you when each applies. The GRM and cap-rate math underneath (1% ≈ a 6% cap at the…
Jul 20, 2026 · 10 min read
What is a good DSCR for a rental property? (And what 1.25 means for your offer)
Every lender's answer is 1.25 — but that's the lender's bar, not the investor's. What a good DSCR actually is band by band, a worked $250K duplex that scores a marginal 1.12 on real NOI yet…
Jul 18, 2026 · 10 min read
How to calculate depreciation on a rental property: the 27.5-year math, step by step (2026)
The largest deduction on Schedule E — and the only one that costs no cash. The three-step calculation worked on a $250K duplex: depreciable basis with closing costs ($256,000), the…
Jul 14, 2026 · 11 min read
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