Enter a proposed rent change and dates to calculate the dollar change, percentage change, and notice interval, then generate a neutral notice letter.
NumPad does not determine whether an increase is legally permitted. Check the lease and official state and local rules for the property before serving a notice.
Parties & property
Property state & official guidance
Select a state to view official research links. Selection will not change any rent or date entry.
Proposed rent change
Dollar change
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Percentage change
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Notice interval
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Methodology and limitations
What NumPad calculates. Dollar change equals proposed new monthly rent minus current monthly rent. Percentage change equals dollar change divided by current monthly rent, multiplied by 100. The notice interval is the calendar-day difference between the two dates entered.
What NumPad does not decide. NumPad calculates the proposed rent change and notice interval from the information you enter. It does not determine whether a rent increase is legally permitted. State, local, lease, and property-specific rules may apply.
State and local research. State selection never changes the rent, dates, or calculated result. It only displays official research links. Cities and counties may impose stricter rent-control, notice, registration, filing, or delivery requirements than state law.
Generated letter. The notice restates user-entered party, property, rent, date, state, and optional reason information plus the calculated change and calendar interval. It makes no representation that the proposal is lawful, exempt, properly delivered, or compliant.
Official sources
Government sources only. State summaries are intentionally limited and not a substitute for reviewing the current law and local rules. Last verified: August 27, 2026.
How the generator calculates amounts and where its legal guidance stops.
This tool calculates the calendar days between the notice date and effective date you enter. It does not select or approve a legal notice period. The applicable period may depend on state and local law, tenancy type, lease terms, delivery method, increase amount, property coverage, and other facts.