Delinquent Taxes.

When a taxpayer is issued a deficiency assessment, interest is added to the additional tax due.  Additional amounts due must be paid within 30 days of the deficiency notice.
 
If the date for filing a tax return, statement, or remittance falls on a weekend or legal holiday, the filing will be considered timely if filed on the next business day.  If payment is not made by the due date of the notice, additional interest will be computed until the date of payment.
 
Current tax law provides a variety of penalties related to timely and accurate filing and payment of excise taxes.
 
Penalties are added to the taxes due under the following circumstances:  late filing of tax returns; late payment of taxes (including tax assessments and warrants); failure to register as a taxpayer; disregard of specific written instructions; failure to remit sales tax to the seller; evasion; and misuse of resale certificates or reseller permits.  Penalties may be waived or cancelled only upon finding that the underpayment or failure to pay tax was the result of circumstances beyond the control of the taxpayer.
 
Interest is added to the amount of outstanding taxes.  However, interest is not added to the amount of any penalties assessed.  The rate of interest is calculated as an average of the federal short-term rate plus two percentage points.  Interest may only be waived or cancelled if the failure to pay was the direct result of written instructions or if a due date was extended for the sole convenience of the Department of Revenue (DOR).
 
Interest is computed from the last day of the month following each calendar year included in a notice, and the last day of the month following the final month included in a notice if not the end of a calendar year, until the due date of the notice.  For annual filers with an April 15 due date, interest is computed from the last day of April immediately following each such reporting period included in the notice, until the due date of the notice.
 
When taxpayers make payments, amounts are applied first to interest, then penalties, and finally to the tax due.
 
Fraudulent Returns and Sales Suppression Software.
It is a class C felony for any person to make any false or fraudulent return or false statement in any return, with intent to defraud the state or evade the payment of any tax.  In addition, it is a class C felony to knowingly sell, purchase, install, transfer, manufacture, create, design, update, repair, use, possess, or otherwise make available, in this state, any automated sales suppression device or phantom-ware.  The statute of limitations for prosecution of these violations is three years from the date of their commission.

When the DOR grants additional time for filing any return and the tax was not paid in full by the extended due date, interest will be computed from first day of the month following the statutory due date until the tax has been paid in full.  If a due date is extended due to a declaration of emergency, no interest will be computed if full payment of tax is made on or before the extended due date set by the DOR.  These changes apply to extensions granted on or after January 1, 2023.
 
The prosecution statute of limitations for filing fraudulent or false returns and for the use of sales suppression software is increased to six years from the date of commission or discovery.