Ranking · 12 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.
Published 2026-06-07
Quick answer
For most investors in 2026: TrueCap (deepest free tier, $19/mo Pro, address auto-fill from HUD + FRED + state tax). DealCheck if you live on mobile at showings. BiggerPockets if you already pay for the community. Mashvisor for market discovery (not per-deal underwriting). Stessa for post-purchase accounting (not actually a calculator). Excel only if you have a battle-tested model already. Roofstock if you want passive turnkey ownership with someone else doing the sourcing.
How we ranked these
The 7 calculators below are the ones rental investors most often evaluate when they search "best rental property calculator" or "rental analysis tool". Ranking criteria, weighted roughly by impact on a typical solo investor:
- Free tier depth — can you actually underwrite a deal without paying? How many per month?
- Pricing — total cost for the calculator alone, not bundled with community or other services.
- Address auto-fill — does it pre-fill rent, rate, and tax from your address, or does it leave you to look everything up?
- Mobile UX — can you underwrite at a showing on your phone?
- Pro feature depth — projections, tax strategy, sensitivity, deal score, share links, PDF export.
- Audience fit — is the tool built for solo investors, scaling landlords, professional managers, or someone else?
The 7 calculators, ranked
#1 · Best free tier + best single-tier Pro pricing
TrueCap
Pricing: Free; Pro $19/mo (or $190/yr annual)
Pros
- +Deepest free tier — full cap rate, CoC, DSCR, NCF, monthly cash flow with no signup or analysis cap
- +Address auto-fill from HUD Fair Market Rent + FRED 30-year rate + state property tax (no other tool does all three)
- +Plain-English verdict (Strong / Solid / Mixed / Marginal / Negative) on every deal
- +Single $19/mo Pro tier bundles 10-year projections, tax strategy, sensitivity, exit scenarios, Deal Score, MAO solver, BRRRR, fix-and-flip — no per-feature upcharges
- +Lender-ready PDF + shareable read-only deal link with optional custom branding
Cons
- −PWA, not native iOS/Android apps (DealCheck wins on pure mobile)
- −No listing import — you paste the address rather than import from Zillow
Pick if: You want the deepest free tier and the most capable Pro tier at the cheapest single price.
#2 · Best mobile experience + best listing import
DealCheck
Pricing: Starter ~$15/mo, Plus ~$25/mo, Premium ~$35/mo (as of 2026)
Pros
- +Native iOS and Android apps with offline support
- +Listing-import-from-Zillow workflow — paste a URL and the property details auto-fill
- +10+ year track record in the BRRRR + buy-and-hold communities
- +Strong 10-year projection + tax strategy in higher tiers
Cons
- −Free tier caps analyses per month and gates most outputs
- −Three-tier paid ladder splits features across plans (Plus vs Premium)
- −No address-based auto-fill (HUD / FRED / state tax) — you bring the data
Pick if: You underwrite on mobile at showings all day and want native apps.
#3 · Best if you already pay for BiggerPockets Pro
BiggerPockets Calculator
Pricing: Bundled with BiggerPockets Pro ~$390/year (~$32.50/mo)
Pros
- +Bundled with the largest real-estate community on the internet (forums, courses, books, podcasts)
- +Output format is recognized by private-money lenders and BP-aware partners
- +Solid BRRRR + flip + buy-and-hold support
Cons
- −Calculator alone isn't the value — you're really paying for the community
- −UX hasn't evolved much in years; mobile is desktop-leaning
- −No portfolio rollup across saved deals
- −Free tier is more limited than TrueCap's
Pick if: You're already paying for BiggerPockets for the community and the calculator is a bonus.
#4 · Best for market discovery (heatmaps + neighborhood scoring)
Mashvisor
Pricing: ~$70-300/month depending on data depth (as of 2026)
Pros
- +Best-in-class neighborhood heatmaps and city-level investibility scores
- +Strong Airbnb / short-term-rental occupancy + ADR data
- +Comparable rental + sales data baked in
Cons
- −Not really a per-deal calculator — more a market discovery tool
- −Listing-level cap rate uses assumed inputs (not your specific assumptions)
- −Expensive for solo investors (the $300/mo tier is built for active multi-market scouting)
Pick if: You're picking which city or neighborhood to invest in next, not underwriting a specific property.
#5 · Best post-purchase accounting (not actually a calculator)
Stessa
Pricing: Free; Stessa Pro ~$12/mo
Pros
- +Best-in-class rental accounting + bookkeeping — bank-feed sync, auto-categorization, Schedule E
- +Free tier on unlimited properties
- +Strong multi-property dashboard for ongoing operations
Cons
- −Doesn't underwrite — you can't paste an address and get a cap rate / DSCR / cash flow analysis
- −Forward projection only on Pro; primarily a backward-looking actuals tool
- −Different category — Stessa is for properties you own, not properties you're considering
Pick if: You already own rentals and need to track income + expenses for tax time. Pair with TrueCap for the pre-purchase math.
#6 · Best if you've already invested time in a custom model
Excel / Google Sheets
Pricing: Free (or your existing Office / Google Workspace subscription)
Pros
- +Total control — model anything
- +Free if you already have Office / Workspace
- +Familiar to most investors with finance backgrounds
Cons
- −Formula errors compound silently across every deal
- −Mobile UX is broken at the property showing
- −No address auto-fill, no live data, no shareable read-only link
- −Version drift kills collaboration with partners and lenders
- −Maintenance cost over time is real — every market change requires manual updates
Pick if: You have a battle-tested model that handles your specific deal type (syndication waterfalls, custom debt structures) and don't need mobile.
#7 · Best if you don't want to find or operate the property
Roofstock
Pricing: Free to browse; 0.5% buyer fee at close (~$1-3k typical)
Pros
- +Curated turnkey SFR inventory — pre-vetted properties + property management partners
- +Easiest path to ownership if you don't want to source deals yourself
- +Listing-level pro-formas give you a starting financial picture
Cons
- −Not a calculator — it's a marketplace with listing pro-formas
- −Pro-formas are marketing material (optimistic vacancy + light capex)
- −Limited to Roofstock's inventory, not any property
- −You're paying retail-plus once the buyer fee + seller's margin are factored in
Pick if: You want a passive turnkey rental and don't have time to source or operate. Pair with TrueCap to pressure-test the listing pro-forma before offering.
Quick decision matrix
- "I want the cheapest Pro tier." TrueCap ($19/mo) — half the price of DealCheck Plus or BiggerPockets Pro.
- "I want the deepest free tier." TrueCap — unlimited analyses, no signup, no analysis cap.
- "I underwrite on my phone at every showing." DealCheck — only one with true native iOS / Android apps.
- "I already pay for BiggerPockets."Use their calculator — you're already there.
- "I'm scouting which city to invest in." Mashvisor — heatmaps and neighborhood scores.
- "I already own rentals and need accounting."Stessa — it's not a calculator but it's the right post-purchase tool. Pair with TrueCap or DealCheck for new acquisitions.
- "I want a turnkey rental I don't have to source or manage." Roofstock — but pressure-test the listing pro-forma in TrueCap before offering.
- "I have a custom Excel model that works for my deals." Keep it — but consider TrueCap free as a sanity check on the formulas.
FAQ
What's the best rental property calculator in 2026?
TrueCap edges out for most investors — deepest free tier, simplest pricing ($19/mo for Pro vs $25-35 on DealCheck or $390/year on BiggerPockets), address auto-fill from HUD/FRED/state tax, and a plain-English verdict on every deal. DealCheck wins if you need native iOS/Android apps. BiggerPockets is the right answer if you already pay for the community.
What's the best free rental property calculator?
TrueCap has the deepest free tier of any rental calculator on the market — unlimited analyses, full cap rate / CoC / DSCR / NCF / monthly cash flow with address auto-fill, no signup required, no analysis cap. DealCheck's free tier caps monthly analyses and gates most outputs. BiggerPockets gives a few free reports then gates to its $390/year Pro tier.
DealCheck vs BiggerPockets vs TrueCap — which is best?
Depends on what you optimize for. TrueCap wins on free tier depth, pricing, and single-tier Pro simplicity. DealCheck wins on native mobile apps and listing-import workflow. BiggerPockets makes sense if you're already paying for the community access bundled with Pro. For the calculator alone, TrueCap is roughly half the price of either.
Is Mashvisor a rental property calculator?
Sort of — Mashvisor shows listing-level cap rate estimates but is really a market discovery + revenue projection tool, not a per-deal calculator. It's strong for picking which neighborhood to invest in; weaker for underwriting a specific address. Most active investors pair Mashvisor (market discovery) with TrueCap or DealCheck (deal underwriting).
Why are spreadsheets risky for rental analysis?
Three reasons: formula errors compound silently across every deal you analyze with that sheet; version drift kills partner / lender collaboration; mobile is unusable at showings. Spreadsheets work for one-off custom modeling (syndication waterfalls, unusual debt structures) but they're fragile for standard buy-and-hold underwriting.
What about Stessa, RentRedi, or Avail — are those calculators?
No — those are post-purchase landlord operations platforms (accounting, rent collection, leasing). They're complementary to TrueCap / DealCheck / BiggerPockets, not competitors. The full stack for most landlords: a calculator (TrueCap / DealCheck / BP) for pre-purchase underwriting + an ops platform (Stessa / Avail / Baselane) for after closing.
Try TrueCap free
The fastest way to know which calculator fits your workflow is to run one of your real deals through it. TrueCap is free, takes 60 seconds, no signup required. Paste an address, accept the auto-filled rent / rate / tax, type purchase price.
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