Capital$tack | Buy: BRRRR Calculator + DSCR Underwriting Tool (Personal License)
If you’re tired of “guru math”… this is bank math.
Capital$tack | Buy (Capital Stack) is lender-aligned BRRRR underwriting built for conservative decisions that hold up under DSCR lending.
It’s a deal-underwriting app wearing Google Sheets clothing.
Free Deal Math Drops
1–2 emails/week. Underwriting tips, negotiation levers, lender rules. No spam.
DSCR + PITIA (Bank Style)
Underwrite like a lender using DSCR, NOI, PITIA, and conservative assumptions.
Max Offer Logic
Negotiation-ready Max Offer math with Suggested Opening Offer guidance.
Deal Filter Mode
Screen deals fast, skip dead deals early, and go deeper only when the numbers deserve it.
What this tool underwrites (like a lender)
Built for BRRRR and DSCR investors who want lender-aligned underwriting before they make an offer.
Capital$tack | Buy is a BRRRR calculator + DSCR underwriting tool in Google Sheets designed for lender-aligned rent, PITIA, NOI, Max Offer, and cashflow decisions.
- Rent (Market + Underwritten Rent)
- PITIA + cashflow modeling (post-refi)
- NOI + DSCR outputs (lender-aligned)
- Max Offer logic (negotiation-ready)
- Suggested Opening Offer guidance
- Primary Concern + verdict-style decision outputs
- Deal Filter Mode to screen deals fast and skip dead deals early
- Rent gets underwritten (not just “what you hope it rents for”) so the deal survives conservative assumptions.
- PITIA is built like a bank payment so cashflow reflects real ownership costs.
- NOI is calculated the correct way because lenders judge deals using NOI.
- DSCR is measured against your target so the verdict matches lender thresholds.
- Max Offer ties it together so you can pressure-test price + rehab without guessing.
- Bank / Credit Union purchase
- Hard Money / Bridge → Refi
- DSCR lender purchase
- Rate & Term refinance
- Cash-Out refinance
- BRRRR investors (Buy, Rehab, Rent, Refi)
- DSCR loan buyers
- Rental property owners optimizing cashflow + DSCR
- Conservative underwriting
- Negotiation math + lender reality checks
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Make your private copy
Your link creates your Google Sheets copy immediately.
Personal License = 1 user. Not for redistribution.