The Four-Component Closing Cost Formula
Four components of closing costs and their characteristics
| Component | What It Includes | Negotiable? | % of Total |
|---|---|---|---|
| Lender fees (Section A) | Origination, points, underwriting, application | Yes — most negotiable part | 25–40% |
| Third-party fees (Section B/C) | Appraisal, title, settlement, attorney | Partially (Section C only) | 30–45% |
| Government charges | Transfer taxes, recording fees | No | 0–40% |
| Prepaids | Insurance, taxes, prepaid interest | No (but shop insurance) | 20–35% |
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.