Description
Clamp a supplied lease-index change between a floor and cap.
Property bookkeeping distinguishes scheduled and collected rent, concessions, assigned common area, fee bases and calendar boundaries. A decimal index change differs from a percentage-number input, and a rent-free period needs explicit start/end conventions. Supplied scenarios do not establish market value, lawful charges, possession or enforceable lease terms.
Clamp a supplied lease-index change between a floor and cap.
When to use this tool
Use Lease Index Cap Floor Applier when you already have baseRent, rawIndexChangeFraction, floorFraction, capFraction and need to clamp a supplied lease-index change between a floor and cap.
How to use the tool and how it works
- Enter baseRent, rawIndexChangeFraction, floorFraction, capFraction. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read appliedChangeFraction, revisedRent. Use the output convention below.
Require baseRent>=0, floorFraction>=-1 and cap>=floor. applied=max(floor,min(cap,rawChange)); revisedRent=baseRent*(1+applied).1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| baseRent | Base Rent | Required. Finite number; minimum 0. |
| rawIndexChangeFraction | Decimal change: 0.05 means +5%; not a percentage number. | Required. Finite number. |
| floorFraction | At least -1; prevents revisedRent falling below zero under valid inputs. | Required. Finite number; minimum -1. |
| capFraction | Cap Fraction | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| appliedChangeFraction | Applied Change Fraction | Required. Finite number. |
| revisedRent | Revised Rent | Required. Finite number. |
{
"input": {
"baseRent": 1000,
"rawIndexChangeFraction": 0.08,
"floorFraction": 0,
"capFraction": 0.05
},
"output": {
"appliedChangeFraction": 0.05,
"revisedRent": 1050
}
}Limitations and assumptions
- Fractions are decimal changes, not percentage points; neither a CPI series nor applicable lease rules are fetched or verified.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Review the lease, transaction records and stated area-measurement method for actual charges and allocations. Use a complete cash-flow or closing statement when assessing net proceeds; supplied credits, caps and fee terms are scenario components.
References
Similar or alternative tools
- Lease Cpi Reference Lag Month
Shift a supplied reference month backwards by an explicit CPI lag.
- Rent Review Back Charge Period
Calculate a supplied rent-review back charge over a stated number of periods.