Model cash flow impact of rent increases
For landlords testing rent increase strategies: how much can you raise rent, how will it affect occupancy, and what's the net cash flow impact?
Rent Increase Calculator
Calculator Inputs
Sign in to run calculations
Create a free account to access calculators — no credit card required.
Create Free AccountWhat it does
The Rent Increase Calculator models the cash flow and NOI impact of different rent increase amounts — 3%, 5%, 10%, or custom — to show the annual income gain and corresponding increases to property value and cap rate. Input current rent and then scenario-test what different increase percentages generate in additional profit.
Rent increases are the most direct lever landlords control to improve cash flow. This calculator reveals the financial impact of increases both small enough to retain quality tenants and large enough to move the needle on profitability. By understanding the upside of meaningful raises, you stop leaving money on the table with minimal annual increases.
Who it's for
- Landlords determining defensible rent increase amounts that balance tenant retention and profit
- Property managers preparing lease renewal negotiations and justifying rate increases to tenants
- Portfolio managers setting rent increase targets across properties to hit cash flow goals
- Investors modeling sensitivity to rent growth assumptions in long-term wealth projections
How it works
Enter current rent and unit count
Your current monthly rent per unit and number of units.
Test increase scenarios
Model 5%, 10%, and 15% rent increases separately.
Estimate turnover impact
Assume some tenants leave; calculate net cash flow gain or loss.
Why it matters
Quantify maximum defensible rent increase
Model tenant response to different increase amounts
Project NOI and cash flow impact of rent hikes
Balance rent growth against vacancy and turnover risk
Unlock all 67 calculators + AI + reports
Full access to Rent Increase Calculator, 66 other calculators, live FRED rates, AI deal verdicts, conservative/base/optimistic scenario projections, printable reports, and vault storage.
Investor Starter
No credit card — ever
- 1 calculator per day (Quick Reference)
- 50 glossary definitions per day
- 5 template previews
- Market Insights (read-only)
- Limited investor games (1 game)
- +3 more features
Core Investor
7-day free trial included
- 67 Professional Calculators — Unlimited
- 1/2/5/10-Year Scenario Projections
- Save & Print Reports to Vault
- 210+ Templates & Contracts
- 110+ Phone Scripts
- +7 more features
Pro Investor
7-day free trial included
- Everything in Core Investor
- Full Investor CRM — Included
- AI Deal Analyzer & Listing Analyzer
- AI Underwriting & Property Analysis
- AI Rehab Estimator & Rent Analyzer
- +7 more features
What every calculator includes
67 Calculators
Every investment strategy — rental, flip, BRRRR, mortgage, commercial, wealth building.
Scenario Projections
Conservative, base, and optimistic 1/2/5/10-year return modeling.
AI Deal Verdict
Claude-powered analysis — strengths, risks, and actionable recommendations.
Investor Vault
Save unlimited reports. Revisit, compare, and track every deal you've analyzed.
Print-Ready Reports
Professional PDF reports to share with agents, lenders, and partners.
Address Auto-Fill
Enter a property address to pre-fill value, rent, and tax data automatically.
Live FRED Rates
Mortgage rate fields pre-populate with Federal Reserve interest rate data.
Investment-Grade Math
Every formula audited against professional underwriting standards.
Secure checkout · Cancel anytime · 7-day free trial on Core & Pro
Frequently asked questions
How much can I raise rent annually?
Market-dependent: 1–3% annually is normal; 4–5% pushes it; 6%+ risks vacancy. Match local rent growth, not your cost growth.
Should I raise rent at renewal or when a tenant leaves?
Both — raise renewals 2–4%; raise turnover rents 5–10% if market supports it. Front-load increases at turnover, be modest on renewals.
What percentage of tenants leave after a rent increase?
Typically 5–15% leave after above-market increases. 1–3% leave for normal increases. Model based on local market tightness.
Is an increase worth it if two tenants leave?
Model it: if higher rent on 8 tenants beats lower rent on 10 units minus turnover costs, increase. Numbers tell the story.
Is this calculator free to use?
Yes — create a free Investor Starter account to run 1 calculator per day. No credit card required. Upgrade to Core ($49/mo) for unlimited access to all 67 calculators.
How accurate are the results?
Results are only as accurate as your inputs. The formulas use industry-standard real estate investment math. Always verify with a licensed professional before committing capital.
Related calculators
Rent Estimator Calculator
Estimate market rent for any property type and size based on local comparables and market conditions.
Open calculatorCash Flow Calculator
Project monthly and annual cash flow by subtracting all expenses from gross rental income.
Open calculatorLandlord Profit Calculator
Calculate net landlord profit after all operating expenses, debt service, vacancy, and management fees.
Open calculatorRental Appreciation Calculator
Project how rent and property value compound over time under different growth rate assumptions.
Open calculatorReady to analyze your next deal?
Join thousands of investors using REI Vault Pro. All 67 calculators, scenario projections, AI insights, vault storage, and printable reports — start free, no credit card required.
