209 CMR, § 32.13
Compliance with 12 CFR 1026.13 constitutes compliance with 209 CMR 32.13; provided, however, any creditor who fails to comply with the requirements of 209 CMR 32.13 forfeits any right to collect from the consumer the amount indicated by the consumer to be a billing error, whether or not such amount is in fact in error, and any finance charges, late payment charges, or other charges imposed thereon, provided that the amount so forfeited under 209 CMR 32.13 shall not exceed $50 for each item or transaction on a periodic statement indicated by the consumer to be a billing error. In no case shall a creditor forfeit any amount for an error in a total figure or subtotal figure reflected on a statement which is caused solely by an error in another item which is the subject of a dispute, nor shall a creditor suffer any forfeit more than once for any item or transaction which may appear on a periodic statement. Nothing in 209 CMR 32.00 shall be construed to limit a consumer's right to recover under M.G.L. c. 140D, § 32.
209 CMR, § 32.13