Compares the after-tax cost of your debt to the after-tax return you could earn by investing instead, so you can see which use of extra cash comes out ahead.
The stated annual interest rate you're paying on the debt.
Whether you can deduct this interest on your taxes, lowering its true cost.
The annual return you expect to earn if you invest the money instead.
Table of Historic Rates of Return. Inflation 2.9%, U.S. Treasury Bills 3.3%, Long-term Government Bonds 5.0%, U.S. Large-Company Stocks 10.4%, and U.S. Small-Company Stocks 11.8%. Past performance is no guarantee of future results. Source: Ibbotson SBBI 1926-2024
Whether investment gains are taxed, lowering their true return.
Your marginal tax rate, applied to whichever side is taxable or deductible.
Table of Federal Income Brackets and Rates. Tax Rate For Single Filers For Married Individuals Filing Joint Returns For Heads of Households 10% $0 to $11,925 $0 to $23,850 $0 to $17,000 12% $11,925 to $48,475 $23,850 to $96,950 $17,000 to $64,850 22% $48,475 to $103,350 $96,950 to $206,700 $64,850 to $103,350 24% $103,350 to $197,300 $206,700 to $394,600 $103,350 to $197,300 32% $197,300 to $250,525 $394,600 to $501,050 $197,300 to $250,500 35% $250,525 to $626,350 $501,050 to $751,600 $250,500 to $626,350 37% $626,350 or more $751,600 or more $626,350 or more.
The extra amount you could put toward debt paydown or investing each month.