lease-vs-cash-analyzerlisted
Install: claude install-skill DaizeDong/buy-me-a-car
# Lease vs Cash Analyzer
Compare complete written offers on the same vehicle, mileage and ownership
horizon. A low monthly payment alone does not establish a cheaper deal. Preserve
the buyer's chosen financing method and private affordability limits.
## Required inputs
- Agreed vehicle value, gross and adjusted capitalized cost, each incentive and
cap reduction, and each financed/upfront fee.
- Residual dollar amount and its MSRP base, money factor, term, mileage allowance,
payment dates, first-payment treatment and total due at signing.
- Applicable lease taxes from current jurisdiction/transaction evidence, with
upfront, periodic and purchase-option taxes separated.
- Contractual acquisition/disposition/purchase fees, wear/mileage rules, security
deposit/refund terms, and any incentive restrictions.
- Written cash or loan alternative, comparison horizon, estimated resale range,
maintenance/insurance differences and an explicit discount-rate assumption.
Do not insert default lender waiting periods, residual percentages, money factors,
fee ranges or state lease-tax classifications. Missing terms remain unverified.
## Standard monthly lease formula
For a conventional level-payment lease, with adjusted cap cost `C`, residual `R`,
money factor `MF`, and `N` months:
```text
depreciation_component = (C-R)/N
rent_component = (C+R)*MF
base_monthly = depreciation_component + rent_component
```
Use the contract's adjusted cap cost, not the vehicle price before fees/c