The Universal Calculation Engine
The Universal Calculation Engine
Real Estate Calculators

Use these calculators for deal screening, analysis, and property management. Deal Screening & Offers covers deal finder, 70% rule, fix & flip, wholesaling, and investor mortgage. Analyze & Execute includes rental property, rehab estimator, BRRRR, and Airbnb. Compare & Exit helps with deal comparison and sell vs keep. Property Management Suite covers rent pricing, lease profitability, vacancy risk, expense benchmark, and portfolio analyzer. Financing includes loans and home affordability. Quick Metrics & Calculators includes rent vs buy, cap rate, cash flow, cash-on-cash, DSCR, house flip, down payment, closing cost, and price per sq ft. Search or pick a category below to start.

Tools by category

Deal Finder Mode
Enter price, rent, and rehab → Calciverse tells you: BUY, NEGOTIATE LOWER, or PASS
70% Rule
ARV, repairs, profit and costs → maximum allowable, safe, aggressive, and danger offers
Fix & Flip Calculator
Purchase, rehab, ARV, costs, and loan terms → net profit, ROI, offer guidance, and risk
Wholesaling Calculator
ARV, repairs, assignment fee, and buyer profit target → max offer to seller and deal quality
Mortgage Calculator
Investor‑focused mortgage with extra payments and refinance simulation
Rehab Estimator
Cost per sq ft + detailed line items → total rehab cost and warnings
BRRRR Calculator
Buy, Rehab, Rent, Refinance, Repeat → cash left in, cash out, and infinite return detection
Rental Property Calculator
Full analysis: cash flow, CoC, cap rate, IRR, wealth creation, break-even rent, and deal score.
Purchase
Operating Expenses (annual)
Income
Hold & Sell
Wealth Growth
Cash Flow by Year
Expense Breakdown
Airbnb Calculator
Nightly rate, occupancy, and costs → cash flow, CoC, cap rate, and minimum profitable nightly rate
Cap Rate
Capitalization rate: NOI ÷ purchase price
Cash Flow
Monthly income minus expenses and debt service
Cash-on-Cash Return
Annual cash flow ÷ total cash invested
DSCR
Debt service coverage ratio: NOI ÷ annual debt service
Sell vs Keep
Compare wealth if you sell now vs keep renting, with appreciation and loan paydown
Deal Comparison & Dashboards
Compare saved rental and flip scenarios side by side
Scenarios come from Rental Property Calculator, Fix & Flip Calculator, BRRRR, Airbnb, and other Real Estate tools that save deals.
Rent Pricing Intelligence
Required rent for break-even, 8% or 10% cash-on-cash, and market risk.
Property & Financing
Operating Expenses (annual $)
Lease Profitability Simulator
10-year projection with rent escalation and expense growth.
Vacancy Risk Calculator
True vacancy cost and risk-adjusted return.
Property Expense Benchmark
Compare your ratios: maintenance, CapEx, tax, insurance → Healthy / Risky / Overleveraged
Portfolio Analyzer
Aggregate 2–20 properties: total return, DSCR, leverage, net worth impact
Properties (add up to 20)

Enter at least 2 properties. Leave value/debt at 0 if unknown; portfolio return uses cash flow only.

Loan & Mortgage
Big financial decisions — conventional, FHA & VA loans with taxes, insurance, PMI/MIP, payoff, refinance and APR views.
1) Property & Loan Basics
2) Program-specific
Conventional: PMI
3) Closing Costs & Cash-to-Close
4) Monthly Ownership Costs
5) Payment Strategy
6) Scenario Settings

Show amounts as:
A) Real Monthly Cost

Payment breakdown
B) Program Cost Impact

C) Cash to Close

D) Loan Summary & Payoff

E) Amortization & Milestones

F) Extra Payments & Biweekly

G) Equity Projection

Chart
Balance & payments over time
Formula: PMT = P × (r(1+r)^n) / ((1+r)^n − 1); r = annual rate/12, n = months
Home & Rent Affordability
Big financial decisions — how much house or rent you can afford: income and debt → max home price or max monthly rent. Combines house affordability, rent affordability, and DTI.
Affordability type
Income & debt
Loan & costs
DTI rule
Reverse: target home price
Comparison
Price tiers
Monthly payment at max price
Required income (target price)
Financial health
Approval strength
Lifestyle impact
Down payment
Income comparison
Budget breakdown
Home Equity & HELOC
Big financial decisions — available equity, Home Equity Loan vs HELOC comparison, costs over time, stress tests, and a clear recommendation.
Your home
Home Equity Loan
HELOC
Best loan payment plan
HELOC draw & repayment
Total cost over time
Net cash & equity
Payment stress test
HELOC sensitivity
Equity vs loan balance
Payment timeline
Recommendation

Rent vs Buy Analyzer

Compare the true financial impact of renting versus buying over time, including ownership costs, investing opportunity cost, and break-even timing.

Timing

Analysis exit sets the year for the main result (verdict, costs, thresholds). Leave blank to use the chart range. Charts/tables can extend farther than that year. Planned stay is only for the early-exit stress case when it is shorter than your analysis exit.

Home purchase

Financing

Ownership costs

Recurring costs are annualized in the model. Moving costs are one-time transaction costs at entry and exit.

Rent assumptions

Tax & investing

Tax savings are a simplified marginal-rate approximation on deductible mortgage interest and property tax. Not a full tax return; use toggles to reflect itemizing vs standard deduction.

Advanced options

Financing details

Ownership, moves & downside

Modeled once after the first month. The Downside scenario uses at least 10% if this stays at 0.

Rent-side options

Subjective: extra you value renting’s flexibility — not a landlord invoice. It increases modeled rent-side cost.

Tax & deduction details

Deductions use a simplified marginal-rate estimate; bracket phase-outs, AMT, and full return interactions are not modeled. Use toggles as directional guidance.

Presets fill the return fields as an assumption shortcut—not a back-tested portfolio.

Scenarios & risk

Adjust how much conservative vs optimistic scenarios move appreciation, rent growth, and investment return relative to your base inputs.

House Flipping Profit
Purchase, repair, sell price, and costs → profit and ROI.
Down Payment
Purchase price and down % → down payment amount.

Down Payment Calculator

Quick answer

Loan amount = price × (1 − down payment %). Lower LTV usually means smaller P&I and often better PMI treatment—program rules vary.

For a related estimate, see 20 Percent Down Calculator.

Explore further: House Down Payment Calculator · Biweekly Mortgage Calculator

LTV in one line

Loan-to-value ≈ loan ÷ price. Down payment % is the complement of initial LTV on a purchase.

Explore further: Closing Cost Calculator · Debt To Income Calculator

Primary angle: cash and loan size—how many dollars you bring to closing (excluding closing costs here) and how much you borrow. Slide 3%, 5%, 10%, and 20% to see LTV and payment change; this is the generic “price × (1 − down %)” frame.

How to use this calculator

  • Hold price steady: Compare down scenarios on the same list price or you mix price and structure effects.
  • Watch PMI thresholds: Many conventional loans treat ~20% down as a PMI breakpoint—not universal across programs.
  • Pair with payment: Use a mortgage payment calculator to see P&I on each loan amount.

Real-world examples

  • Example: $428k list, 5% vs 15% down: 5% → ~$406.6k loan; 15% → ~$363.8k loan—~$43k smaller principal at 15% cuts P&I materially at the same rate (illustrative).
  • Sensitivity check: Nudge the rate by about +0.5% and the principal by about −5%. If the payment or total interest moves enough to change your decision, you are still on a steep part of the curve where small inputs matter.

Explore further: Home Affordability With Taxes

What this means

LTV drives both payment and PMI exposure—raising down payment lowers principal and can remove PMI at common conventional breakpoints, which often swamps a small rate tweak.

FAQ

Does this include closing costs?

Down payment is separate from closing costs and prepaids—budget both for cash to close.

Is this a loan commitment?

No. Outputs are educational estimates. Final payments, APR, and fees come from your lender’s disclosures.

Why does my amortization schedule differ slightly?

Rounding, day-count conventions, and first-payment timing shift pennies. Use the schedule for directionally correct totals.

Closing Cost
Estimate closing costs from purchase price or loan amount.
Price per Square Foot
Price and square footage → $/sq ft (or enter $/sq ft to get price).
1031 Exchange Calculator
Estimate tax-deferred exchange: relinquished and replacement property, boot, and deferred gain.
Relinquished property (sold)
Replacement property (bought)

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