The Sinatra Group · Investment Calculator Suite
Run the numbers.
Make the deal.
10 professional-grade calculators built for real estate investors. Analyze rentals, flips, BRRRR, STR, value-add multifamily, ground-up development, and more — all in one place.
10
Calculators
10+
Years Experience
SCV
LA · Ventura
DRE
#01997563
Acquisition Strategies
Advanced Strategies
Tools & Reference
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Rental Property
Buy & Hold cash flow, cap rate, CoC return & DSCR analysis
Acquisition
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Income
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Annual Expenses
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Targets: CoC ≥ 8% | Cap Rate ≥ 6% | DSCR ≥ 1.25 | Cash Flow ≥ $200/unit/mo
📋 Deal Notes
For your records or client presentationAnalysis
—Monthly Cash Flow
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Returns
Cash-on-Cash Return—
Cap Rate—
Gross Rent Multiplier—
Cash Flow
Gross Annual Rent—
Effective Gross Income—
Total Annual Expenses—
NOI (Annual)—
Annual Debt Service—
Financing
Loan Amount—
Monthly Payment (P&I)—
DSCR—
Total Cash Invested—
Fix & Flip
Profit, ROI, annualized return & max allowable offer
Acquisition & Financing
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Rehab
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Disposition
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70% Rule MAO = (ARV × 0.70) − Rehab. Aim for ≥ 20% ROI or annualized ≥ 40%.
📋 Deal Notes
For your records or client presentationFlip Analysis
—Net Profit
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Returns
ROI on Cash Invested—
Annualized ROI—
Equity Spread (ARV - All-In)—
Costs Breakdown
All-In Cost—
Total Rehab (w/ contingency)—
Holding Costs Total—
Financing Costs—
Sale Costs Total—
Benchmarks
70% Rule MAO—
65% Rule MAO—
% of ARV (All-In)—
Multifamily Value-Add
Reposition & Exit — forced equity, stabilized NOI, exit cap & equity multiple
Acquisition (As-Is)
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Current (As-Is) Income & Expenses
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Value-Add Business Plan
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Exit Strategy
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Value-add targets: Forced equity ≥ 20% of all-in cost | Stabilized CoC ≥ 8% | Equity multiple ≥ 1.8× over hold period
📋 Deal Notes
For your records or client presentationValue-Add Analysis
—Forced Equity Created
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As-Is Snapshot
Current NOI (Annual)—
As-Is Cap Rate—
As-Is Cash Flow / Mo—
Stabilized (Post-Value-Add)
Stabilized NOI—
Stabilized Cap Rate—
Stabilized Cash Flow / Mo—
Stabilized CoC Return—
Exit & Total Return
Projected Sale Value—
Net Sale Proceeds—
Total Cash Invested—
Equity Multiple (Est.)—
IRR (Est. Annual)—
BRRRR Strategy
Buy · Rehab · Rent · Refinance · Repeat — capital recycling & infinite return analysis
Buy — Acquisition
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Rehab
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Rent — Stabilized Income
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Refinance
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Holy Grail: Pull out 100%+ of invested capital while keeping the property cash-flowing. Target: ≥ $100/mo cash flow post-refi, CoC ≥ 8% on remaining capital, and full capital recycled to repeat.
📋 Deal Notes
For your records or client presentationBRRRR Analysis
—Capital Left In Deal
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Capital Stack
Total Cash Invested (All-In)—
Total Rehab (w/ contingency)—
Carry Costs (Rehab Period)—
Hard Money Interest—
Refinance
New Loan (ARV × LTV)—
Cash Pulled Out at Refi—
% of Capital Recovered—
New Monthly P&I Payment—
Post-Refi Cash Flow
NOI (Annual)—
Monthly Cash Flow—
Cash-on-Cash (on remaining $)—
Cap Rate (on ARV)—
DSCR—
Equity & Spread
Equity at Refi (ARV − Loan)—
Spread (ARV − All-In Cost)—
STR / Airbnb Calculator
Short-term rental analysis — ADR, occupancy, platform fees & net cash flow
Acquisition & Financing
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STR Revenue
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Annual Operating Expenses
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STR targets: CoC ≥ 10% | Occupancy ≥ 60% | ADR benchmarked to comparable listings. Always verify local STR regulations and permit requirements before purchasing.
📋 Deal Notes
For your recordsSTR Analysis
—Monthly Net Cash Flow
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Revenue
Gross Rental Revenue / yr—
Cleaning Fee Revenue / yr—
Platform Fees Paid / yr—
Net Revenue / yr—
Expenses & Returns
Total Annual Expenses—
NOI (Annual)—
Annual Debt Service—
Cash-on-Cash Return—
Cap Rate (on Purchase)—
Financing
Loan Amount—
Monthly P&I—
Total Cash Invested—
Revenue / Night (occupied)—
Ground-Up Development
New construction & teardown/rebuild — yield on cost, profit margin & IRR
Land & Acquisition
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Construction
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Financing
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Exit / Sale
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Development targets: Profit margin ≥ 20% of ARV | Yield on cost ≥ 6% (if holding) | IRR ≥ 25% | Profit ≥ 15% of total cost.
📋 Deal Notes
For your recordsDevelopment Analysis
—Net Profit
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Cost Breakdown
Land & Acquisition—
Hard Construction Costs—
Soft Costs & Permits—
Financing Costs—
Carry Costs—
Sale Costs—
Total All-In Cost—
Returns
Profit Margin (% of ARV)—
Return on Cost—
Equity Spread (ARV − All-In)—
Cash Invested (Equity)—
ROI on Cash—
Cost / Sq Ft (All-In)—
ARV / Sq Ft—
Deal Comparison
Compare any two deals side by side — mix and match strategies
Deal A
Deal B
Loan Calculator
Conventional mortgage & hard money — payment, amortization & total cost
Conventional / DSCR Mortgage
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Conventional
Monthly P&I Payment
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Total Monthly PITI—
Loan Amount—
Down Payment—
Total Interest Paid—
Total Cost of Loan—
Break-Even Rent—
Hard Money / Bridge Loan
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Compare Lenders
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Hard Money
Monthly Interest Payment
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Origination Fee—
Total Interest (full term)—
Total Cost of Capital—
Effective APR—
Alt Lender Comparison
Alt Monthly Payment—
Alt Total Cost—
Savings with Primary Lender—
1031 Exchange
Tax-deferred exchange — deadlines, boot calculation & equity rollover
Relinquished Property (What You're Selling)
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Replacement Property (What You're Buying)
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Tax Rates (for boot estimate)
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Key rules: Must use a QI (Qualified Intermediary). 45-day ID period. 180-day close period. Equal or greater value + debt required to defer ALL tax. Consult your CPA — this is illustrative only.
1031 Analysis
—Critical Deadlines
Close of Escrow—
45-Day ID Deadline—
180-Day Close Deadline—
Relinquished Property
Net Sale Proceeds—
Realized Gain—
Equity (Net of Loan)—
Exchange Requirements
Min Replacement Value—
Min Replacement Debt—
Boot (taxable amount)—
Tax Savings
Tax If Sold (no 1031)—
Tax on Boot (if any)—
Tax Deferred via 1031—
Additional Cash Needed—
Investment Glossary
Key terms across all calculators — searchable & filterable
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