Net Effective Rent Calculator
"2 months free!" sounds great until renewal hits at the full $3,000. Net effective rent strips away the marketing and shows you the true average monthly cost. Add up to 10 apartments with different concession packages and see them ranked by what you'll actually pay. The cheapest-looking deal isn't always the cheapest deal.
Apartment listings with free months and concessions are hard to compare at face value. This calculator converts any deal into net effective rent — your true average monthly cost over the full lease term. Add up to 10 apartments with different concession packages, free months, and fees to see them ranked by actual cost. Split the results by roommates to find the cheapest option per person.
One-time discount or gift card
Parking, pet rent, amenity fees, etc.
One-time discount or gift card
Parking, pet rent, amenity fees, etc.
Roommates
Just you — no splitting
How This Calculator Works
Enter Your Details
Fill in amounts, people, and preferences. Takes under 30 seconds.
Get Fair Results
See an instant breakdown with data-driven calculations and Fairness Scores.
Share & Settle
Copy a shareable link to discuss results with everyone involved.
Frequently Asked Questions
What is net effective rent?
Net effective rent is the true average monthly cost after factoring in concessions. If an apartment is $3,000/month with 2 months free on a 12-month lease, you pay $30,000 total instead of $36,000. Net effective rent = $30,000 ÷ 12 = $2,500/month.
How do I compare apartments with different concessions?
Convert everything to net effective rent. Apartment A: $3,000 with 2 months free ($2,500 effective). Apartment B: $2,700 with 1 month free ($2,475 effective). Apartment B is actually cheaper despite a lower concession. Our calculator does this comparison automatically.
Do free months affect my rent after the lease?
Usually yes — when you renew, the landlord will charge the listed (gross) rent, not the net effective rent. A $3,000 apartment with 2 months free is still a $3,000 apartment at renewal. Factor this into your long-term budget.
How do roommates affect net effective rent?
The net effective rent per person is simply the total divided by the number of roommates. Our calculator shows both the total and per-person amounts for easy roommate comparison.
People Also Calculate
Rent to Income
For a $2,000/mo apartment, landlords want $6,000/mo gross income (3x rule) or $80,000/yr (40x rule). Check if you qualify solo or with a co-applicant.
50/30/20 Budget
On a $4,500/mo take-home, the 50/30/20 rule gives you $2,250 for needs, $1,350 for wants, and $900 for savings. See your exact breakdown — adjusted for rent.
Affordability
The 30% rule says you can afford $1,500/mo on a $60K salary. Factor in student loans and your real number drops to $1,100. Get your actual budget.
Prorated Rent
Moving in on the 15th of a 30-day month at $1,800/mo rent? You owe $960, not the full month. Calculate your exact prorated amount for any move date.
True Cost
That $1,500/mo apartment actually costs $2,200 when you add utilities, parking, commute, laundry, and fees. See the real number before you sign a lease.
Move-In Costs
First month, last month, security deposit, broker fee — moving into a $1,500/mo apartment can cost $6,000+ upfront. See your real total before you sign.
Rent vs Buy
At 7% mortgage rates, buying isn't automatically smarter than renting. Compare true costs over 1-30 years including equity, taxes, maintenance, and opportunity cost.
Renters Insurance
Renters insurance runs $15-30/mo for $30K in coverage. Estimate your premium, compare individual vs. joint roommate policies, and find the smarter option.
Roommate Savings
The average roommate saves $700/mo — that's $120,000+ if invested over 10 years at market returns. See your exact savings and what they could grow into.
Related Guide
How to Split Rent Fairly: The Complete Guide
Factor concessions and free months into your true monthly rent — then split fairly.