§ 95.78  INTEREST AND PENALTIES.
   (A)   As used in this section:
      (1)   APPLICABLE LAW means this chapter, the resolutions, ordinances, codes, directives, instructions, and rules adopted by the City of Cambridge provided they impose or directly or indirectly address the levy, payment, remittance, or filing requirements of the City of Cambridge.
      (2)   FEDERAL SHORT-TERM RATE means the rate of the average market yield on outstanding marketable obligations of the United States with remaining periods to maturity of three years or less, as determined under Section 1274 of the Internal Revenue Code, for July of the current year.
      (3)   INCOME TAX, ESTIMATED INCOME TAX and WITHHOLDING TAX means any income tax, estimated income tax, and withholding tax imposed by the City of Cambridge pursuant to applicable law, including at any time before January 1, 2016.
      (4)   INTEREST RATE AS DESCRIBED IN DIVISION (A) OF THIS SECTION means the federal short-term rate, rounded to the nearest whole number percent, plus 5%. The rate shall apply for the calendar year next following the July of the year in which the federal short-term rate is determined in accordance with division (A)(2) of this section.
      (5)   RETURN includes any tax return, report, reconciliation, schedule, and other document required to be filed with the Tax Administrator or the City of Cambridge by a taxpayer, employer, any agent of the employer, or any other payer pursuant to applicable law, including at any time before January 1, 2016.
      (6)   UNPAID ESTIMATED INCOME TAX means estimated income tax due but not paid by the date the tax is required to be paid under applicable law.
      (7)   UNPAID INCOME TAX means income tax due but not paid by the date the income tax is required to be paid under applicable law.
      (8)   UNPAID WITHHOLDING TAX  means withholding tax due but not paid by the date the withholding tax is required to be paid under applicable law.
      (9)   WITHHOLDING TAX includes amounts an employer, any agent of an employer, or any other payer did not withhold in whole or in part from an employee's qualifying wages, but that, under applicable law, the employer, agent, or other payer is required to withhold from an employee's qualifying wages.
   (B)   (1)   This section applies to the following:
         (a)   Any return required to be filed under applicable law for taxable years beginning on or after January 1, 2016;
         (b)   Income tax, estimated income tax, and withholding tax required to be paid or remitted to the City of Cambridge on or after January 1, 2016.
      (2)   This section does not apply to returns required to be filed or payments required to be made before January 1, 2016, regardless of the filing or payment date. Returns required to be filed or payments required to be made before January 1, 2016, but filed or paid after that date shall be subject to the ordinances or rules and regulations, as adopted before January 1, 2016, of the City of Cambridge to which the return is to be filed or the payment is to be made.
   (C)   Should any taxpayer, employer, agent of the employer, or other payer for any reason fail, in whole or in part, to make timely and full payment or remittance of income tax, estimated income tax, or withholding tax or to file timely with the City of Cambridge any return required to be filed, the following penalties and interest shall apply:
      (1)   Interest shall be imposed at the rate described in division (A) of this section, per annum, on all unpaid income tax, unpaid estimated income tax, and unpaid withholding tax.
      (2)   (a)   With respect to unpaid income tax and unpaid estimated income tax, the City of Cambridge may impose a penalty equal to 15% of the amount not timely paid.
         (b)   With respect to any unpaid withholding tax, the City of Cambridge may impose a penalty not exceeding 50% of the amount not timely paid.
      (3)   With respect to returns other than estimated income tax returns, the City of Cambridge may impose a penalty of $25 for each failure to timely file each return, regardless of the liability shown thereon for each month, or any fraction thereof, during which the return remains unfiled regardless of the liability shown thereon. The penalty shall not exceed $150 for each failure.
   (D)   Nothing in this section requires the City of Cambridge to refund or credit any penalty, amount of interest, charges, or additional fees that the City of Cambridge has properly imposed or collected before January 1, 2016.
   (E)   Nothing in this section limits the authority of the City of Cambridge to abate or partially abate penalties or interest imposed under this section when the Tax Administrator determines, in the Tax Administrator's sole discretion, that such abatement is appropriate.
   (F)   By the 31st day of October of each year the City of Cambridge shall publish the rate described in division (A) of this section applicable to the next succeeding calendar year.
   (G)   The City of Cambridge may impose on the taxpayer, employer, any agent of the employer, or any other payer the City of Cambridge's post-judgment collection costs and fees, including attorney's fees.
(Ord. 66-15, passed 12-14-15; Am. Ord. 18-18, passed 3-26-18)