Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 84, § 4

If a delinquent town does not pay its proportion of such expenses and charges within sixty days after the date of such notice, with interest at a rate to be fixed by the county commissioners, not exceeding ten per cent a year from the time when the same was paid by them, the commissioners, after a hearing, may issue a warrant against such town for the amount which it was ordered to pay, with interest and further costs of such notice and warrant, which shall be collected and paid into the county treasury.