Honest comparison
TrueCap vs RentCast: rent estimates vs full underwriting
RentCast is a property-data + rent-estimation platform — get rent comps, property value estimates, and API access. TrueCap is the underwriting calculator that turns those numbers (and more) into a cash-flow decision. RentCast feeds inputs; TrueCap runs the analysis.
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TL;DR
Use TrueCap when
- You want a full underwriting analysis with cap rate, DSCR, and cash flow.
- You want financing math baked in (PITI, amortization, DSCR ratios).
- You want a portfolio rollup across saved deals.
- You want a free tier that doesn't cap analyses.
Use RentCast when
- You want listings-based rent comps with comparable property addresses.
- You need API access to integrate rent data into your own software.
- You want automated property value estimates (AVM).
- You're building a tool and need a data feed, not a UI.
Feature-by-feature
Side-by-side on every dimension that matters for a comparison-shopping investor.
| Feature | TrueCap | RentCast |
|---|---|---|
Primary purpose | Per-deal underwriting calculator | Rent + property value estimation |
Cap rate / CoC / DSCR analysis | Yes — full engine, free tier | Not modeled |
10-year projection | Pro — rent + expense + appreciation | Not modeled |
Tax strategy modeling | Pro — depreciation + interest + after-tax CF | Not modeled |
Deal score + verdict | Pro — 0-100 score with subscore breakdown | Not applicable |
Rent comp data | HUD Fair Market Rent (county-level, gov-published) | Yes — listings-based comps with addresses |
Property value estimate | Purchase price as user input | Yes — automated valuation model |
API access for developers | No | Yes — REST API for rent + value |
Address auto-fill (multi-source) | Yes — HUD + FRED + state property tax | Property data only |
Mortgage + financing math | Yes — full PITI + DSCR + amortization | Not included |
Pricing (entry tier) | Free; Pro $19/mo | Free + paid tiers ~$15-$74/mo (as of 2026) |
Free tier | Yes — full underwriting math | Limited free lookups |
Shareable read-only deal link | Pro — public URL + branding | Not the use case |
Lender-ready PDF | Pro — multi-page report | PDF reports available on paid |
Investor dashboard (saved deals) | Pro — portfolio rollup | Property-list dashboard |
RentCast details based on publicly available product info as of 2026. See rentcast.io for their current state.
How TrueCap + RentCast fit together
- Get a tighter rent estimate in RentCast. Their listings-based comps give you a more specific number than the HUD county-level baseline.
- Plug that rent into TrueCap.Override the auto-filled HUD rent with RentCast's number. Everything downstream recalculates.
- Run the full underwrite in TrueCap. Cap rate, DSCR, cash flow, 10-year projection, tax strategy.
- Save the deal + revisit later.TrueCap's saved-deal feature lets you re-run with updated assumptions when market data shifts.
Want to see just the underwriting half? Try the cap rate calculator or the full TrueCap analyzer. Our guide on 60-second underwriting walks through the workflow end-to-end.
Common questions about TrueCap vs RentCast
Quick answers to the questions investors comparison-shopping these tools actually ask.
Is TrueCap a RentCast alternative?
Not directly — they overlap on rent estimates but TrueCap is full underwriting. RentCast is best-in-class for listings-based rent comps and AVM-style property value estimates. TrueCap pre-fills rent from HUD FMR (county-level baseline) and then runs the full underwrite (cap rate, DSCR, projection). Many investors use RentCast for the tightest rent number and TrueCap for everything else.
How accurate is RentCast vs TrueCap's HUD-based rent estimate?
RentCast is typically tighter in major metros because they aggregate active listings. HUD Fair Market Rent (TrueCap's default) is conservative and works as a defensible lender-friendly baseline. In hot markets where listings exceed FMR, RentCast may give a more realistic number. In stable Midwest cash-flow markets, the two are usually within 5-10% of each other.
Does RentCast do cap rate or DSCR calculations?
No — RentCast is a data and estimation tool, not a financial calculator. You'd use the rent number and AVM property value from RentCast as inputs into a separate calculator (TrueCap, DealCheck, or your spreadsheet) to compute cap rate, DSCR, cash flow, etc.
Which has a better free tier?
TrueCap — unlimited analyses, cap rate, CoC, DSCR, NCF, monthly cash flow all on the free tier. RentCast's free tier limits the number of property lookups per month and doesn't include the API. If you only need rent estimates occasionally, both work; if you're underwriting multiple deals a week, TrueCap free is more useful.
Can I use RentCast's data in TrueCap?
Yes — every input in TrueCap is editable. Pull rent from RentCast, type it into TrueCap's rent field, and the entire downstream analysis (cap rate, CoC, DSCR, cash flow) updates instantly. This is the most common combined workflow.
Underwrite the next deal — free.
TrueCap free covers cap rate, CoC, DSCR, NCF, and monthly cash flow. Pro unlocks projections, sensitivity, tax strategy, exit scenarios, deal score, MAO, PDF exports, and shareable read-only deal links. No card to start.