Prohibits counties from charging interest on entire personal property tax liabilities when a taxpayer has made installment payments

HB 55 allows counties to offer personal property tax payment plans (annual, semiannual, or quarterly) based on prior-year estimates. If a taxpayer misses a payment, counties may only charge interest on the unpaid balance - not on amounts already paid through installments. This directly affects personal property taxpayers in counties adopting such plans, preventing counties from unfairly charging interest on paid portions. The bill also requires refunds for overpayments (without interest) and excludes real property taxes paid by financial institutions via escrow accounts.