Filing Tip: Dealers who make deliveries into a county with a different discretionary sales surtax rate should file using form DR-15. If you need to request the DR-15 form, please contact the Department, Taxpayer Services Unit at 850-488-6800 before your next filing. Line A, Taxable Sales and Purchases NOT Subject to Discretionary Sales Surtax Enter the total of all sales and purchases not subject to discretionary sales surtax. This normally consists of sales of single items that exceed the $5,000 discretionary sales surtax limit.Remember, the discretionary sales surtax only applies to the first $5,000 on a single taxable item of tangible personal property. Discretionary Sales Surtax Rates (DR-15DSS) Example: A business located in a county with a discretionary sales surtax sells a single taxable item for $6,500. The business reports $6,500 on Line 3, Taxable Sales/Purchases. To calculate Line A (Taxable Sales and Purchases NOT Subject to Discretionary Sales Surtax) the business subtracts $5,000 from $6,500.$ 6,500 (Sales amount)- 5,000 (Limit on a single item)=$ 1,500 (Amount exempt from discretionary sales surtax)The business then writes the difference ($1,500) on Line A. The $1,500 is the amount that is not subject to discretionary sales surtax.