Description
Return base×rate, its minimum with cap, and capped only when raw exceeds cap.
Financial accounting arithmetic tracks amounts, balances, fees and allocations on a declared currency and sign basis. An algebraically consistent result does not authorize a transaction or establish an amount legally due.
Return base×rate, its minimum with cap, and capped only when raw exceeds cap.
When to use this tool
Use Merchant Surcharge Cap Reference Base when you need a specified monetary balance or allocation calculation.
How to use the tool and how it works
- Enter base, rate, cap. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read uncapped, charge, capped. Inspect capped before interpreting the associated values.
Require nonnegative base, rate and cap. Return base×rate, its minimum with cap, and capped only when raw exceeds cap.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| base | Base | Required. Finite number; minimum 0. |
| rate | Supplied rate on the period and denominator basis stated above. | Required. Finite number; minimum 0. |
| cap | Cap | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| uncapped | Uncapped | Required. Finite number. |
| charge | Charge | Required. Finite number. |
| capped | Capped | Required. Boolean. |
{
"input": {
"base": 100,
"rate": 0.03,
"cap": 2
},
"output": {
"uncapped": 3,
"charge": 2,
"capped": true
}
}Limitations and assumptions
- Equality does not set capped true. The cap and rate are supplied, not a determination of lawful merchant surcharges or payment-network terms.
- 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
Reconcile source ledgers and governing agreements using the intended currency precision and accounting policy. Include omitted fees, tax, timing and legal requirements before acting on a result.
References
Similar or alternative tools
- Finance: Fee Cap Floor Single Transaction
Clamp amount×rate between the supplied fee limits.
- Deposit Interest Withheld Net Term Tool
Split nonnegative deposit interest with a caller-supplied withholding fraction; no tax rule is inferred.