Guides · 8 answers
A workable ceiling for most households is 15% of monthly take-home pay for everything the vehicle costs — payment, insurance, fuel and maintenance — which usually means a much lower purchase price than a payment-only calculator suggests.
Uses the Vehicle Affordability Calculator.
Read the guideMost budgets support a full monthly housing cost of about 28% of gross income, with total debt under about 36% — and because taxes and insurance come out of that 28% first, the mortgage itself is smaller than people expect.
Uses the Mortgage Calculator.
Read the guideUnder mid-range assumptions the break-even is commonly somewhere between five and ten years, because buying front-loads roughly 8% of the price in transaction costs that appreciation has to earn back before ownership pulls ahead.
Uses the Rent vs Buy Calculator.
Read the guideExtra payments have a sharply diminishing return: on a typical $20,000 loan at 7% the first $50 a month saves about eight months, while going from $100 to $250 buys progressively less per dollar — so the right amount is the largest one you can hold every month without stopping.
Uses the Debt Payoff by Extra Payment Calculator.
Read the guideDivide the target monthly take-home by one minus your effective deduction rate — for a $5,000 monthly target that is roughly $73,000 to $86,000 gross a year depending on state taxes and pre-tax contributions.
Uses the Take-Home Pay Calculator.
Read the guideOn a $400,000 loan the 15-year term costs about $826 more a month but roughly $306,000 less in interest — so the choice is really about whether you would rather commit to the higher payment or keep the flexibility and pay extra voluntarily.
Uses the Mortgage Calculator.
Read the guideAvalanche — highest rate first — always costs the least interest mathematically; snowball clears individual accounts sooner and is easier to sustain; and in both cases the size of the extra payment matters more than the ordering.
Uses the Debt Payoff by Extra Payment Calculator.
Read the guideOn a $32,000 vehicle financed over six years, five years of ownership costs around $54,000 once insurance, fuel, maintenance and tax are counted — roughly $21,000 more than the loan payments alone.
Uses the Vehicle Affordability Calculator.
Read the guideWhere the guides lead
Every guide ends in one of these. They reverse-solve from what you can afford, compare scenarios side by side, and name the input deciding the answer.
Works backwards from pay, debts and running costs to the vehicle price you can carry — with a stretch limit and the binding constraint named.
Open decision toolPayment mode and a reverse affordability mode: solve a home-price range, a comfortable housing cost and a stretch limit from your finances.
Open decision toolProjects both paths month by month, finds the break-even year if there is one, and names the assumption deciding the answer.
Open decision toolPayoff date, interest saved, ready-made extra-payment scenarios, and the reverse solve for a target debt-free date.
Open decision toolNet pay across every pay period, raise and contribution scenarios, and a reverse solve for the gross salary a target take-home needs.
Open decision tool