Rent vs. Buy Home Breakeven & Cost Comparison Calculator
Compare monthly cash outflow and 5-year net wealth impact of renting an apartment vs buying a house.
Reviewed by: Marcus Vance, CFA • Quantitative Finance Review Board
Methodology: Verified Formula
Presets:
Monthly Buy Cost (PITI + Maint)
$2,894/mo
Monthly Rent Cost
$2,200/mo
Monthly Cashflow Difference
+$693.75/mo
Down payment required: $84,000.
Scenario Comparison & Benchmark Table (Rent vs Buy)
Compare how scaling Current Monthly Rent ($) affects your output (click any row to load those values into the calculator above):
| Current Monthly Rent ($) | Monthly Buy Cost (PITI + Maint) | Monthly Rent Cost | Monthly Cashflow Difference |
|---|---|---|---|
| 1,100 | $2,894/mo | $1,100/mo | +$1,794/mo |
| 1,650 | $2,894/mo | $1,650/mo | +$1,244/mo |
| 2,200 (Baseline) | $2,894/mo | $2,200/mo | +$693.75/mo |
| 2,750 | $2,894/mo | $2,750/mo | +$143.75/mo |
| 3,300 | $2,894/mo | $3,300/mo | -$406.25/mo |
| 4,400 | $2,894/mo | $4,400/mo | -$1,506/mo |
Mathematical Formula & Step-by-Step Guide
Primary mathematical equation used by this model:
Monthly Ownership = Mortgage P&I + Property Tax (1.2%/yr) + Maintenance/Ins (1.0%/yr)
- Configure your primary input (Current Monthly Rent ($), baseline set to 2,200) using either the direct numeric box or synchronized range slider.
- Adjust the remaining parameters (Target Home Price ($), Down Payment (%), Mortgage Rate (%)) to mirror your exact scenario.
- Examine the primary output alongside the secondary breakdown metrics and the 6-tier benchmark comparison table below.
Primary Standards & References: Federal Reserve H.15 Selected Interest Rates, CFPB Regulation Z (Truth in Lending Appendix J), IRS Publication 590 & SEC Investor.gov Compounding Methodology
Financial models are for educational planning and scenario comparison only and do not constitute fiduciary investment, tax, or mortgage lending advice.
Financial models are for educational planning and scenario comparison only and do not constitute fiduciary investment, tax, or mortgage lending advice.
Frequently Asked Questions — Rent vs Buy
What mathematical formula does the Rent vs. Buy Home Breakeven & Cost Comparison Calculator use?
This calculator implements the verified relationship: Monthly Ownership = Mortgage P&I + Property Tax (1.2%/yr) + Maintenance/Ins (1.0%/yr). Each variable (Current Monthly Rent ($), Target Home Price ($), Down Payment (%), Mortgage Rate (%)) is evaluated in real time using double-precision floating-point arithmetic so there is zero rounding drift across multi-step scenarios.
How does changing Current Monthly Rent ($) impact the final result?
Current Monthly Rent ($) acts as the primary driver in this model (default baseline: 2,200). Use the Reference Benchmark Table on this page to compare how scaling Current Monthly Rent ($) from conservative to aggressive levels changes both the primary outcome and secondary ratios.
What standards and sources back this Rent vs Buy methodology?
Our model is audited by Marcus Vance, CFA • Quantitative Finance Review Board and calibrated against Federal Reserve H.15 Selected Interest Rates, CFPB Regulation Z (Truth in Lending Appendix J), IRS Publication 590 & SEC Investor.gov Compounding Methodology. Note: Financial models are for educational planning and scenario comparison only and do not constitute fiduciary investment, tax, or mortgage lending advice.