Finanzas
Instantáneo, privado y gratis
IVA / Impuesto sobre Ventas.
Calcula precios con y sin impuestos
Esta calculadora aún no está totalmente traducida; parte del texto se muestra en inglés.
Introduce tus valores
Los resultados se actualizan al escribir.
Desglose:
Como usar
Añadir impuesto: Úsalo cuando tengas un precio antes de impuestos y quieras el precio final.
Quitar impuesto: Úsalo cuando el precio ya incluya impuestos y necesites el precio base.
Error común: No restes el porcentaje de la tasa de impuesto al precio bruto. Debes dividir entre (1 + tasa de impuesto).
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Cite this calculator
Canonical URL: https://mathify.one/es/finance/sales-tax
Cite as: Mathify. (2026). IVA / Impuesto sobre Ventas. https://mathify.one/es/finance/sales-tax
Use Cases
Budgeting for a purchase
Determine the total cost including sales tax before you go to the store or make an online purchase, so you can plan your spending accurately.
Example: You want to buy a $500 laptop and your local sales tax is 8%. The calculator shows you'll pay $540 in total.
Checking a receipt
Verify that the sales tax charged on a receipt is correct by entering the pre-tax price and the tax rate, or by entering the final price and tax amount to find the pre-tax price.
Example: Your receipt shows a final price of $107.50 with a 7.5% tax rate. The calculator confirms the pre-tax price was $100.
Frequently Asked Questions
- How do I use the sales tax calculator?
- Enter any two of the three values: pre-tax price, sales tax amount, or final price. The calculator will compute the missing value. For example, enter the pre-tax price and the sales tax rate to get the tax amount and final price.
- Can I calculate the pre-tax price from the final price?
- Yes. Enter the final price and the sales tax rate (or tax amount) to find the pre-tax price. The calculator will reverse the tax addition to give you the original amount before tax.
- What if I only know the sales tax rate and the final price?
- You can still use the calculator. Enter the final price and the tax rate (as a percentage) to find the pre-tax price and the tax amount. The calculator handles the math for you.
Tips & Common Mistakes
Tips
- Always enter the sales tax rate as a percentage (e.g., 8 for 8%), not as a decimal (0.08).
- If you know the tax amount but not the rate, you can enter the pre-tax price and the tax amount to find the rate.
- Double-check that you are using the correct tax rate for your location, as rates can vary by city, county, and state.
- Use the calculator to compare prices across different tax jurisdictions to see the true cost difference.
Common Mistakes to Avoid
- Entering the tax rate as a decimal instead of a percentage (e.g., 0.08 instead of 8) leads to incorrect results.
- Confusing the pre-tax price with the final price when entering values, especially when you have a receipt that shows the total.
- Forgetting that some items are tax-exempt; the calculator assumes a uniform tax rate, so adjust for exempt items manually.
Last updated: August 13, 2026