Finance category
Mortgage, loan, investing, tax, and money calculators.
Rent Board Roll Forward Calculator
Rent-controlled markets let you bank prior years' allowable increases. This calculator rolls them forward.
Max legal rent
$2,640
Compounded lift
10.87%
Capped applied lift
10.00%
How the math works
Compounded lift = (1+allowable)^years − 1. Capped to single-year max if rules require.
In rent-controlled markets, banked increases are an operator's best friend. A 3-year flat tenant can see 10%+ legal bump all at once. Document every year's allowable to roll it forward.
How to Use
- Enter current rent.
- Enter years flat.
- Enter annual allowable %.
- Enter cap (if any).
- Read maximum legal rent.
Frequently Asked Questions
How does it work?
SF, LA, NYC, Oakland: most allow banking previous years' unapplied increases. Specific rules vary; confirm with local rent board. Compound unless banked.
Caps?
Some jurisdictions cap single-year rollforward (10-12% max). Others allow up to full compounded. Know your limit before roll-forward.
Tenant notice?
Longer notice required for big increases. SF: 60 days for above 10%. Document carefully — improperly noticed increases can be rescinded by rent board.
What documentation matters here?
Written leases, move-in/move-out inspections with photographs, ledger entries showing every payment and charge, served notices with proof of service, and contemporaneous emails or texts. Courts weigh written evidence heavily; informal understandings rarely stand. Institutional operators run a monthly file audit to catch gaps before they matter. Good paper trails recover most of what's owed.
Related Calculators
More Finance Calculators
Browse all finance →AI Cost Calculator
Compare token costs across OpenAI, Anthropic, and Google AI models. Calculate monthly API spending for GPT-4o, Claude, Gemini, and more.
Tip Calculator
Calculate the perfect tip and split the bill between friends. Choose preset percentages or enter a custom tip amount.
Bill Splitter Calculator
Split an uneven restaurant bill by item, divide tax and tip proportionally, and see exactly who owes whom.
Discount Calculator
Calculate sale price, discount amount, stacked discounts, sales tax, and total savings for any markdown.
Gas Mileage Calculator
Calculate MPG or km/L, estimate trip fuel cost, and compare annual fuel expenses between two vehicles.
Sales Tax Calculator
Add sales tax to a price, reverse-calculate the pre-tax amount from a total, and estimate tax for multiple items on one receipt.
Keep exploring
Next steps in Finance
Previous calculator
Rent Board Fee Calculator
Calculate annual rent board fees per unit in rent-controlled cities and the allowable tenant passthrough share.
Next calculator
Rent Burden Calculator
Calculate household rent burden — % of gross income spent on rent + utilities — with cost-burdened and severely-burdened thresholds.