The Four-Component Closing Cost Formula

Four components of closing costs and their characteristics

ComponentWhat It IncludesNegotiable?% of Total
Lender fees (Section A)Origination, points, underwriting, applicationYes — most negotiable part25–40%
Third-party fees (Section B/C)Appraisal, title, settlement, attorneyPartially (Section C only)30–45%
Government chargesTransfer taxes, recording feesNo0–40%
PrepaidsInsurance, taxes, prepaid interestNo (but shop insurance)20–35%
ℹ️Section A vs. Section C: Know the Difference

Your Loan Estimate shows Section A (Origination Charges — lender fees you cannot shop away from this lender) and Section C (Services You Can Shop — title insurance, settlement agent, attorney). Section A is the lender’s profit margin; Section C is where comparison shopping saves real money.

How Loan Amount Drives Most Costs

Most closing cost components scale with loan amount: origination fee (% of loan), lender title insurance (% of loan), FHA/VA upfront mortgage insurance (% of loan), discount points (% of loan). Only a few are flat fees: appraisal, credit report, recording fees. This means comparing percentage-based fees across loans of different sizes requires normalizing to the actual dollar amount.

The Annual Percentage Rate (APR) as a Cost Comparator

APR is the interest rate that would produce the same total loan cost (rate + amortized fees) as the quoted rate plus closing costs, expressed as an annual rate. It allows comparison of loans with different rate/fee combinations. A 6.5% rate with $4,000 in fees vs. 6.75% with $0 fees: APR comparison reveals the true cost difference for your expected tenure.

Calculate Your Closing Costs Using the Formula

Enter loan amount, state, and loan type — see each component calculated accurately.

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