Blog
Deep dives on rental property analysis, real estate math, and underwriting best practices from the team behind TrueCap.
How to calculate ARV (after-repair value): the comps method, step by step (2026)
The number every flip and BRRRR is built on — and the one you can't look up. Why ARV is a forecast of an appraisal, not purchase + rehab: the renovated-comps method step by step, a worked 1,400 sq ft example that reconciles four comps to a $255,000 ARV, the 70% rule max offer and 75% LTV refi math that key off it, and a sensitivity table where a 10% ARV miss cuts flip profit 74% and more than doubles the cash trapped in a BRRRR.
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 worked $300K duplex where a 1.5-point swing moves the sale price $73,000 and the 5-year IRR from +11.5% to −2.6%, the exit ≥ entry rule, the residential comps caveat, and why a compressing exit cap is a bet on rates, not a rental.
Jul 8, 2026 · 11 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 expenses (mortgage, depreciation, CapEx, income tax), a line-by-line duplex that runs 40% before reserves and 46% after, the exact reconciliation to the 50% rule (~49% of gross rent), and why a 35%-vs-46% assumption swings the building's value about $46,000.
Jul 6, 2026 · 11 min read
The 70% rule for house flipping (and BRRRR): how to calculate your max offer (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 Maximum Allowable Offer formula worked on a $300K flip, a full P&L that shows where the 30% spread actually goes ($37,800 of costs, $52,200 of profit), the price-per-sqft comp method for pinning down ARV against the neighborhood ceiling, the BRRRR twist where the same 70% cap dovetails with a 75% cash-out refinance, and the backward solve that lands within $2,000 of the rule — plus the cheap-house and long-rehab cases where 70% quietly lies.
Jul 5, 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 rental pulling $446/month over its payment reads as a −$79 debt, not income. The net-rental mechanic worked on a $250K rental, why the 25% haircut swings DTI ~3 points, the house-hack version where the same rule adds $1,275 of income and turns a 54% ratio into 45%, the Schedule E add-backs that make a paper loss net to breakeven, and the DSCR escape hatch when your ratio finally hits the wall.
Jul 4, 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 second one drives decisions. The formula, a 10-year example where the dollar return nearly doubles while ROE slips from 16.9% to 12%, why the decay is pure leverage, the cash-on-equity figure that lands at 3.7%, and the honest cost of the refinance ROE tempts you into.
Jul 1, 2026 · 11 min read
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 $20,700 gap into curable vacancy ($16,800) and sticky loss-to-lease ($3,900), the five places rent rolls mislead, the GRM that reads 8.2 on potential rent and 12.1 on collected, and the estoppel-and-bank-deposit check that turns the seller's claim into proof before you wire a dime.
Jun 30, 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. The buydown-ladder steepness that actually sets the break-even, the IRS rule that makes you amortize rental points instead of deducting them up front, the two points that lift a $200K-loan deal from a 1.14 to a 1.20 DSCR, and the refinance trap where buying down a rate you abandon in three years quietly costs about $1,600.
Jun 29, 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), the cap-rate-vs-loan-constant rule, the leverage identity that makes it exact, a worked $300K property across five cap rates, and the trap where a deal still cash-flows and still clears a DSCR lender while quietly dragging cash-on-cash below the all-cash return.
Jun 28, 2026 · 11 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 exemption you'll never get, how a sale resets taxes toward your purchase price (Prop 13 and the cyclical-reassessment states), the supplemental bill that lands after closing, and a worked $400K duplex where a $3,400-vs-$6,000 tax line drops the cap rate 0.65 points, pushes DSCR from 1.00 to 0.90, and swings cash flow from +$9 to −$208 a month.
Jun 27, 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 potential rent — a worked 2026 duplex where 86% break-even leaves a 14-point cushion, the overpaid twin where that cushion collapses below 5 points, and why break-even occupancy is just the occupancy where DSCR hits 1.0.
Jun 26, 2026 · 10 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 number, the haircut from market to effective rent, and why an 8% ($150/month) rent miss moves the cap rate 0.6 points, swings cash flow ~$128/month, and pushes DSCR from 1.15 to 1.24 — across the lender's line.
Jun 25, 2026 · 11 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 estimate it before you have a quote, and how a $1,500-vs-$3,500 premium swings cash flow ~$167/month and drags DSCR below the line.
Jun 23, 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% loan to 7%; a HELOC doesn't), and a worked side-by-side where the higher-rate HELOC is the cheaper decision by thousands a year.
Jun 23, 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 a conventional loan won't follow you into an LLC, the 2026 Corporate Transparency Act reversal that exempted domestic LLCs from BOI filing, and when it's actually worth the cost.
Jun 23, 2026 · 12 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 to investors, and the 2026 rate arbitrage (~$650/month on a 3.5% subject-to loan) underwritten with the downside priced in.
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 ~0.57% to ~0.76%, two 1% properties whose returns sit 40% apart, and how to use the rule without letting it talk you into a bad deal.
Jun 23, 2026 · 10 min read
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 — before the reassessment trap and escrow surprises. How to estimate each part, and how a $1,647 payment becomes a 1.27 DSCR.
Jun 20, 2026 · 11 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 rental at 15% vs 20% vs 25% down — including why more down can mean a higher return when the loan constant (~8.2%) tops the cap rate. Plus the house-hack route in for $8,750.
Jun 18, 2026 · 11 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 ratio) ÷ GRM), how it maps to the 1% rule, and two $250K duplexes with identical GRMs that cash flow +$365 and −$155.
Jun 17, 2026 · 10 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 $250K duplex example, the CapEx classification trap that swings the cap rate a full point, and the three ways people get NOI wrong.
Jun 16, 2026 · 10 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 is 2.4x the naive estimate, the §1245 cost-seg trap, and five ways to defer or erase it.
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 allowance, its MAGI phase-out, and the four mistakes that cost real money.
Jun 12, 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 reserves do to NOI, DSCR, and cash flow on a $220K rental.
Jun 11, 2026 · 10 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 8 makes a deal better or worse.
Jun 10, 2026 · 11 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 to fold it into your cash-to-close.
Jun 9, 2026 · 11 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
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 cash-out most guides skip.
Jun 7, 2026 · 11 min read
How to calculate cap rate (with worked examples) — 2026 guide
Cap rate = NOI ÷ purchase price. Sounds simple, but most investors get NOI wrong by skipping CapEx reserves or vacancy. Here's the formula, three worked examples (good deal / bad deal / cash purchase), and when cap rate is the wrong metric.
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 cash invested,' three worked examples, and the trap most calculators fall into.
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 between your DSCR and the lender's DSCR (which is usually lower).
Jun 7, 2026 · 8 min read
How TrueCap's verdict engine decides Strong Buy vs Avoid
The exact cash flow, DSCR, cap rate, and cash-on-cash thresholds TrueCap uses to classify a rental deal as Strong / Solid / Mixed / Marginal / Negative — pulled directly from the production code.
Jun 7, 2026 · 10 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, appreciation, and the very real cost of being your tenants' landlord.
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 hidden costs everyone forgets, and how to stress-test for a bad off-season.
Jun 7, 2026 · 14 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 one costs you 4-6 points and 18 months of friction. Here's how to choose.
Jun 7, 2026 · 11 min read
Bonus depreciation on rental property in 2026: what changed, what's left, and how to use it
Bonus depreciation phased down from 100% in 2022 to 40% in 2025 and 20% in 2026. But cost segregation studies, the short-term rental loophole, and the real-estate professional designation still create real tax savings. Here's the current playbook.
Jun 7, 2026 · 13 min read
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, and audience fit.
Jun 7, 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 each free tier covers and where the gates kick in.
Jun 7, 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
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.
Jun 7, 2026 · 11 min read
DealCheck vs Stessa vs TrueCap: which one do you actually need?
An honest 3-way comparison of DealCheck, Stessa, and TrueCap. Different tools for different stages — pre-purchase underwriting vs post-purchase ops — with concrete recommendations.
Jun 7, 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 is accounting. Avail is leasing + rent collection. Baselane bundles both with banking. Honest 3-way comparison plus where TrueCap fits before any of them.
Jun 7, 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
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 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
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 items most pro formas understate.
May 26, 2026 · 9 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 skip.
May 26, 2026 · 10 min read
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 deductions combined.
May 26, 2026 · 11 min read
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
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
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
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
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
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
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
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
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
DSCR loans explained: what they are, when they make sense, what they cost in 2026
DSCR loans approve based on the property's economics, not your personal income. Who they're for, what rates and ratios look like in 2026, and the trade-offs vs. conventional financing.
May 24, 2026 · 10 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
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
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