Compare a fixed-payment current debt with a new loan that finances an entered fee.
All amounts are in USD. The fixed nominal annual interest rate is divided by 12, with equal payments at the end of each month; the first payment is one month after borrowing. This input is not an APR. Totals use unrounded payments; lender rounding and daily interest can differ. Taxes, insurance, late fees and variable rates are excluded.
Current debts are treated as one balance, one entered nominal rate and one fixed payment, for at most 600 months. The fee is added to the new starting balance and accrues interest. Comparison uses complete undiscounted interest plus the financed fee, excluding other charges and time-value adjustments. Lower monthly payments do not establish lower total cost, eligibility or guaranteed savings. This is not a federal Direct Consolidation Loan calculation.
CFPB: https://www.consumerfinance.gov/ask-cfpb/what-do-i-need-to-know-if-im-thinking-about-consolidating-my-credit-card-debt-en-1861/