Calculate VAT & Edit PDFs:
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Add or remove VAT on any invoice and edit PDFs — add text, images and signatures — right in your browser. 100% free, no sign-up, and your files never leave your device.
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Calculate VAT and edit PDFs in one place — no switching between apps, no waiting. Get professional results in seconds.
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Your files and figures never leave your device — everything is processed locally, so your data stays completely private.
How to Calculate VAT
Value-Added Tax (VAT) can be confusing, but calculating it is simple once you know the formulas. Whether you need to add tax to a price or strip it out, here is how to do it manually or using our tool.
1. How to Add VAT to a Base Price
If you have a net price (before tax) and need to find the total price including VAT, follow these steps:
- Step 1: Divide your local VAT rate by 100 to turn it into a decimal (e.g. 20% = 0.20).
- Step 2: Add 1 to that decimal (e.g. 1 + 0.20 = 1.20).
- Step 3: Multiply your base price by that number.
Example: If an item costs £100 and VAT is 20%, multiply £100 by 1.20 to get £120.
2. How to Remove VAT from a Total Price
If you have a gross price (the final amount paid) and want to find out how much the item cost before tax, follow these steps:
- Step 1: Divide your local VAT rate by 100 and add 1 (e.g. 20% = 1.20).
- Step 2: Divide the total price by that number to get the net price.
Example: If a total bill is £120 and VAT is 20%, divide £120 by 1.20 to see that the base price was £100.
How to Edit a PDF Safely Online
When editing official documents, contracts, or personal forms online, security and data privacy should be your top priority. Here is how to modify your documents safely:
1. Check for a Secure Connection
Before using any online tool, look at your browser’s address bar. Ensure the website URL begins with https:// and shows a lock icon. This means your connection is encrypted so third parties cannot intercept your data.
2. Choose Tools That Don’t Upload Your Files
The safest editors never send your document to a server at all. Our PDF editor processes everything entirely inside your browser — your file is never uploaded, stored, or shared. When you close the tab, nothing remains.
3. Keep Sensitive Information Hidden
If a document contains highly sensitive details (such as full card numbers or passwords), use a whiteout or redact tool to permanently mask that data before saving or sharing the final copy.
4. Download and Finish
Once you have finished adding text, filling out your form, or signing your document, download the completed PDF to your local device. Because nothing is ever uploaded, closing the browser tab is all it takes to clear your file completely.
This content is provided for general information only and does not constitute tax or legal advice.
Frequently Asked Questions
Everything you need to know about calculating VAT and editing PDFs.