Applies to final total only.
Coupon applies to pre-tax subtotal.
$
Items
| Item | Category | Unit Price | Qty | Unit | Disc. Type | Disc. Value | Tax % | Base | Item Discount | Tax | Line Total | Action |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Subtotal (pre‑tax) | 0.00 | 0.00 | 0.00 | 0.00 | ||||||||
Grand Total: $0.00
Rounded Total: $0.00
Example Data
Use the button above to load these rows into the calculator instantly.
| Item | Category | Unit Price | Qty | Unit | Disc. Type | Disc. Value | Tax % |
|---|---|---|---|---|---|---|---|
| Bananas | Fresh Produce | 0.60 | 6 | piece | none | 0 | 0 |
| Whole Milk 1L | Dairy | 1.25 | 2 | liter | percent | 5 | 5 |
| Chicken Breast | Meat & Seafood | 5.40 | 1.2 | kg | fixed | 0.40 | 5 |
| Bread Loaf | Bakery | 2.10 | 1 | pack | none | 0 | 8 |
| Olive Oil | Pantry | 7.50 | 1 | liter | percent | 10 | 8 |
| Detergent | Household | 9.90 | 1 | pack | none | 0 | 12 |
Formulas Used
- Base = Unit Price × Quantity
- Item Discount =
if type =
%, Base × (Discount% ÷ 100); if type = Fixed, = Discount Value; else = 0 - Net Before Tax = Base − Item Discount
- Item Tax = Net Before Tax × (Tax% ÷ 100)
- Line Total = Net Before Tax + Item Tax
- Subtotal (pre‑tax) = Σ(Net Before Tax)
- Total Tax = Σ(Item Tax)
- Cart Coupon: applied to pre‑tax subtotal only (does not reduce tax)
- Fees = Delivery/Service Fee
- Grand Total = (Subtotal − Coupon) + Total Tax + Fees
- Rounded Total = Grand Total rounded to selected increment
Note: Jurisdictions differ on how coupons affect tax. This tool applies cart coupons to pre‑tax subtotal without altering tax. Adjust item discounts if you must model coupon‑before‑tax effects.
Fresh Produce Default Tax: 0%
Dairy Default Tax: 5%
Meat & Seafood Default Tax: 5%
Bakery Default Tax: 8%
Pantry Default Tax: 8%
Beverages Default Tax: 8%
Frozen Default Tax: 8%
Household Default Tax: 12%
Defaults are editable per item.
How to Use This Calculator
- Pick a currency and rounding option.
- Click Add Item and fill in details. Category pre‑fills tax.
- Choose discount type:
% offorFixed, then set value. - Repeat for all items. Quantities support decimals (e.g., 1.25 kg).
- Optional: set a cart coupon and any delivery/service fee.
- Totals update automatically. See the itemized breakdown at the bottom.
- Export your results as CSV or PDF using the buttons.
Frequently Asked Questions
Cart coupons reduce the pre‑tax subtotal. They do not reduce the calculated tax amounts, which are derived from item‑level net values after item discounts.
Yes. The tax field is editable on each row. Category selection only provides a starting default which you can change anytime.
Rounding is applied to the final grand total only. Choose the increment to match local cash rules, such as rounding to the nearest 0.05.
Item discounts apply per line before tax. The cart coupon applies once to the overall pre‑tax subtotal, typically representing store‑wide promotions or loyalty benefits.
Use your browser’s save or print to PDF to archive results. You can also export a CSV and re‑import manually by re‑adding rows from the file.
Fees are added after coupon and tax calculations. They are not taxed by default. You can combine delivery and service into a single value here.
Yes. Enter decimals such as 0.5 kg or 1.25 liters. The calculator multiplies unit price by the exact quantity for precise totals.