Discounts

Discount Calculator

Stack coupons and estimate final price with tax.

Discounts

Summary

Original

$200.00

Total discount

$35.00

Subtotal

$165.00

Tax

$13.61

Final total

$178.61

Tax is applied after discounts

Examples

Compounding
Percent on discounted base
Policy
Tax timing affects totals
  1. List discounts

    Capture all promos and coupons.

  2. Choose timing

    Decide tax before/after policy.

  3. Verify totals

    Validate subtotal, tax, final total.

Outcome

Clear, auditable discount breakdown for billing and ecommerce.

FAQ

How are multiple discounts applied?

They apply in sequence; percent discounts compound, fixed subtract directly.

Tax before vs after discounts?

Before: tax on base; After: tax on discounted subtotal.

Can I mix percent and fixed?

Yes—add any number of mixed discount types.

Does order change the result?

Yes—reordering percent/fixed discounts can affect totals.

How to reflect coupons?

Add a fixed discount for coupon value, then percent for promos.

What precision should I use?

Use your invoicing policy; 2 decimals is common.

Can I remove a specific discount?

Yes—each discount line can be edited or deleted.

Do negative totals get blocked?

The tool prevents totals below zero by design.

Is currency formatting automatic?

Yes—results use your browser locale currency.

How to export to invoices?

Copy the summary values into your billing system lines.

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