OTD vs. MSRP vs. Dealer Quote: Three Numbers That Are Not Interchangeable
Learn which number belongs in each stage of the negotiation—and why the written transaction total is the only clean dealer-to-dealer comparison.
Read guide →DriveWise field notes
Car-buying math, translated into plain English.
These guides are built to be used beside a written quote. Each one handles a different part of the purchase instead of repeating the same general advice.
Price language
Price language
Trade-in math
Trade-in math
Trade-In Tax Credit Basics: Separate the Allowance, Payoff and Tax Treatment
Break the trade into allowance, payoff, equity and possible tax treatment before it is folded into the replacement vehicle.
Read guide →Fees
Fees
Dealer and Documentation Fees: How to Compare Without Guessing
Separate official registration charges from dealer-controlled processing lines, then judge the complete transaction instead of one fee.
Read guide →Incentives
Incentives
Rebates and Incentives: Where the Discount Lands Matters
Compare customer cash, dealer discounts and promotional APR offers without counting the same savings twice.
Read guide →Paperwork
Paperwork
How to Read a Buyer’s Order Before You Sign
Follow the VIN, selling price, tax, products, trade and amount financed from the written quote into the final paperwork.
Read guide →Trade-in risk
Trade-in risk
Negative Equity on a Trade-In: Make the Rollover Visible
Calculate the shortage, see where it lands in the new transaction and test alternatives before extending the debt.
Read guide →Loan terms
Loan terms
60 vs. 72 vs. 84-Month Auto Loans: What the Lower Payment Costs
Compare payment, interest and remaining balance across common loan lengths before selecting the smallest monthly figure.
Read guide →Cash planning
Cash planning
Car Down Payment vs. Emergency Fund: Do Not Empty the Account for a Smaller Payment
Measure the payment savings from extra cash against the value of keeping an emergency and first-year vehicle reserve.
Read guide →Quote comparison
Quote comparison
How to Compare Two Dealer Quotes Without Getting Distracted by the Payment
Normalize two written offers by vehicle, trade, cash and loan term so the lower total cost becomes visible.
Read guide →Used vehicles
Used vehicles
Used-Car Pre-Purchase Cost Checklist: What the OTD Number Does Not Show
Add inspection findings, immediate maintenance and warranty status to the purchase total before calling a used car affordable.
Read guide →Start with the paperwork in front of you. Read the relevant guide, then use the calculator to test the exact price, fee, trade and loan numbers from your deal.