Charges imposed by someone else can still count. A fee charged by a third party is a finance charge if the creditor requires you to use a third party as a condition of the credit, even if you choose which one, or to the extent the creditor keeps part of the fee (1026.4(a)(1)). Fees charged by a closing agent, such as a settlement agent or title company, count only if the creditor requires the particular service, requires the charge, or keeps part of it (a)(2). Mortgage broker fees are finance charges even when the lender did not require a broker and keeps none of the fee (a)(3).
What is excluded. Section 1026.4(c) lists charges that are not finance charges: application fees "charged to all applicants for credit, whether or not credit is actually extended"; charges for actual unanticipated late payment, for exceeding a credit limit, or for delinquency or default; a bank's charge for paying items that overdraw an account, unless the payment and the charge were agreed in writing beforehand; fees for participating in a credit plan, such as a card's annual fee; seller's points; and, in a transaction secured by real property, bona fide and reasonable fees for title work, document preparation, notary and credit reports, appraisals and inspections done before closing, and escrow deposits for amounts that would not otherwise be finance charges. That last list is why the same appraisal fee is a finance charge on a car loan and not on a mortgage.
Insurance and debt cancellation are conditional. Premiums for credit life, accident, health or loss-of-income insurance, and fees for debt cancellation or debt suspension coverage, are finance charges unless the coverage is voluntary, that fact and the cost are disclosed in writing, and you sign or initial an affirmative request for it (1026.4(d)). Property insurance can be excluded if you may buy it from an insurer of your choice and that is disclosed, so a lender can require homeowners or collision coverage and still leave the premium out. If the lender requires credit insurance or debt cancellation coverage, its cost stays in the finance charge.
Two smaller rules. Taxes and fees paid to public officials to record or release a security interest can be left out if they are itemized and disclosed (1026.4(e)). And a lender may not shrink the finance charge by netting out interest or dividends you earn on a deposit or investment; the regulation calls that a prohibited offset (1026.4(f)).
Why the number matters. On a closed-end loan the lender must disclose the finance charge "using that term" with a description such as "the dollar amount the credit will cost you" (1026.18(d)), and the annual percentage rate is the finance charge expressed as a yearly rate on the amount financed. A fee taken out of the loan proceeds is a prepaid finance charge: it reduces the amount financed and raises the APR above the note rate. On a credit card the picture differs. The annual fee is excluded, and the periodic statement must group finance charges from periodic rates under the heading "Interest Charged" and other charges under "Fees" (1026.7(b)(6)), so a card statement rarely uses the words finance charge at all.