// multi-utility computation suite · offline · instant · precise
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finance.debt-cost-basis Calculator
Calculates the adjusted cost basis and cumulative return for a personal debt management position accounting for purchases, sales, and return of capital. Accurate cost basis tracking is required for correct capital gains tax calculation — FIFO, LIFO, and average cost methods produce different taxable gains on the same sale.
Inputs
Balance
Reference formula or conversion factor shown for context.
Rate
The rate at which interest accrues. Small differences compound dramatically — compare carefully when choosing between lenders.
Payment
Reference formula or conversion factor shown for context.
Results
months to payoff
Number of monthly payments needed to clear the balance at the given payment amount.
total paid
Sum of all payments made — principal plus all interest. Subtract the loan amount to see the pure interest cost.
interest cost
The total monetary cost computed for the given inputs.