VAT Calculator
Add or extract value added tax at any rate, and see why the registration threshold is a cliff that costs a consumer-facing business a fifth of its revenue overnight.
VAT Calculator
Results recalculate instantly on every keystroke. Nothing you type is transmitted.
What this result does not account for
- Results are a model, not a quotation — an institution's own figures govern.
- Every input is an assumption; change one and the answer changes with it.
- Rounding is applied only at the display layer, so totals may differ by a cent from a statement that rounds each line.
In short: At 20%, a $1,800 gross price contains $300 of VAT and $1,500 net — the VAT fraction of a gross price is one sixth, not one fifth. Crossing a $90,000 registration threshold costs a consumer-facing business $15,000 immediately, and it needs $108,000 of turnover to net what $90,000 previously netted.
Formula
At 20% the VAT fraction is one sixth of the gross price. Taking 20% of a gross figure overstates the tax every time.
Worked Example
- Add VAT. $1,500 × 1.20 = $1,800 gross, containing $300 of tax.
- Extract correctly. $1,800 ÷ 1.20 = $1,500 net.
- Note the fraction. $300 ÷ $1,800 = 16.667% — one sixth, not one fifth.
- See the wrong method. 20% of $1,800 is $360, overstating the VAT by $60.
- Cross the threshold. $90,000 of turnover becomes VAT-inclusive, costing $15,000 — you need $108,000 to stand still.
Analyst's note. VAT is a tax on consumption collected by businesses, and the crucial structural point is that a registered business in the middle of a chain remits only the tax on its own value added — the entire burden lands on the final consumer. That makes VAT nearly costless for a business selling to other businesses, and brutal for one selling to the public. The registration threshold is therefore a genuine cliff rather than a slope: a consumer-facing trader crossing $90,000 loses $15,000 overnight and must grow turnover by a full 20% simply to return to where they were. This is why so many small traders deliberately cap their turnover just below the line.
Strengths & Limits Of This Model
Where this engine is strong
- Runs entirely in your browser — no figure you type is transmitted or stored.
- Shows the full working, so every number can be traced and challenged.
- Free, unmetered and free of affiliate incentives.
Where it stops
- Generalised assumptions cannot capture every individual circumstance.
- Jurisdiction-specific rules and mid-year changes may not be reflected.
- A model output is not a substitute for a professional review of your position.
Practical Use Cases
Extracting VAT for bookkeeping
Divide the gross by one plus the rate. The subtraction shortcut overstates the tax by $60 on an $1,800 invoice, and the error repeats on every line of a reconciliation.
Deciding whether to register voluntarily
If you sell mainly to VAT-registered businesses, registering lets you reclaim input VAT at no cost to your customers. If you sell to consumers, registration is a straight loss of margin unless you can raise prices.
Planning growth around the threshold
The turnover-to-stand-still figure shows what growth is actually required to make crossing worthwhile. Model the resulting margin change with the Margin Calculator before committing to it.
Methodology & Editorial Standards
The engine treats VAT as a simple ad valorem tax added to a net price, with extraction by division as the correct inverse. The threshold analysis assumes a consumer-facing business that cannot pass the tax on, which is the worst case and the one that matters for the cliff; a business selling to registered customers can raise prices by the full rate at no cost to the customer, who reclaims it. Reduced and zero rates apply to many categories — food, children's clothing, books and domestic energy vary widely by jurisdiction — and are entered by adjusting the rate. Flat rate schemes, cash accounting, partial exemption and the annual accounting scheme all change the effective liability for small businesses and are outside scope. Registration thresholds differ by country and change periodically. The engine implements the standard published formula for this calculation. Inputs are validated for domain and sign before evaluation, and any undefined case returns an em-dash rather than a spurious value.
Computation runs in IEEE-754 double precision at full internal precision; rounding to two decimal places occurs strictly at the display layer, so no cumulative drift enters the result. All monetary outputs use accounting presentation — grouped thousands, two decimals, negatives in parentheses — so figures can be transcribed directly into a model or working paper. Division-by-zero and out-of-domain inputs return an em-dash rather than a misleading number.
This engine was reconciled against an independent reference implementation and hand-verified for the worked example above before release. Our full five-stage review process is published on the About Us page.
Disclaimer. This calculator is provided for informational and modelling purposes only and does not constitute financial, tax, legal, medical, or engineering advice. Verify all figures with a qualified professional before acting on them.
VAT Calculator — 20 Expert FAQs
20 analyst-written answers to the questions practitioners actually ask — optimised for voice and answer-engine retrieval.
How do I remove VAT from a gross price?
Divide by one plus the rate. $1,800 ÷ 1.20 = $1,500. Taking 20% of the gross instead gives $360 of VAT rather than the correct $300 — an overstatement of $60.
What is the VAT fraction?
The rate divided by one plus the rate — one sixth at 20%, so 16.667% of any gross price. It is the number to memorise, because gross prices are what appear on receipts.
Does my business actually pay VAT?
No, if you are registered. You charge output VAT, reclaim input VAT and remit only the difference — the tax on your own value added. The consumer at the end of the chain bears the entire amount.
What happens when I cross the registration threshold?
Your turnover becomes VAT-inclusive. A consumer-facing business that cannot raise prices loses $15,000 on $90,000 of turnover immediately, and needs $108,000 to net what it netted before.
Should I register voluntarily?
If your customers are VAT-registered businesses, yes — you reclaim input VAT and your customers reclaim what you charge them, so it costs nobody anything. If you sell to consumers, voluntary registration is simply a loss.
Can I stay below the threshold deliberately?
Many small traders do, and it is legal to decline work. Artificially splitting one business into several to stay below is not, and revenue authorities actively pursue disaggregation.
What is input VAT?
VAT you paid on business purchases, which you reclaim against the VAT you collected. It is why registration is neutral for business-to-business traders and why unregistered businesses quietly bear VAT on their own costs.
What is the difference between zero-rated and exempt?
Zero-rated supplies carry a 0% rate but still allow input VAT recovery. Exempt supplies do not allow recovery at all, which makes exemption considerably worse for a business than zero-rating.
How is VAT different from sales tax?
Sales tax is collected once at the final retail sale; VAT is collected at every stage with credits for tax already paid. The consumer bears a similar burden but VAT is far harder to evade, which is why most of the world uses it.
What is a flat rate scheme?
A simplification where small businesses pay a fixed percentage of gross turnover and forgo most input recovery. It saves administration and sometimes money, but it is a poor choice for anyone with substantial taxable purchases.
Do I charge VAT on exports?
Generally exports are zero-rated, and business-to-business supplies within a common VAT area often use a reverse charge where the customer accounts for the tax. Rules are jurisdiction-specific and worth verifying.
When do I have to register?
Usually when rolling twelve-month turnover exceeds the threshold, or when you expect to exceed it within thirty days. The test is forward-looking as well as historical, which catches businesses growing quickly.
How often do I file a VAT return?
Quarterly in most jurisdictions, monthly for large traders or those in persistent repayment positions. Late filing and late payment carry separate penalties in most systems.
Can I reclaim VAT on entertainment or cars?
Usually not, or only partially. Business entertainment and passenger cars are the two most common blocked categories, and claiming them is a routine audit finding.
What if I charge the wrong rate?
You remain liable for the correct amount, so undercharging comes out of your margin. Rate classification for borderline products is genuinely difficult and worth checking rather than assuming.
Is this vat calculator free to use?
Yes. It is free, requires no account, and has no usage limits. ApexConverter is funded by contextual advertising, never by selling user data.
Is my data sent to a server?
No. The engine runs as Vanilla JavaScript inside your browser under our Zero-Server Client-Side Execution model. Your figures are computed locally and are never transmitted, logged, or stored.
How accurate is this calculator?
It applies the standard closed-form formula in IEEE-754 double precision, rounding only at the display layer. The engine is reconciled against an independent reference implementation before release.
Does it work on mobile?
Yes. The interface is mobile-first with numeric keypad hints and is tested down to a 320-pixel viewport with no horizontal scrolling.
Can I use it offline?
Largely, yes. Because computation is client-side, the page continues to calculate without a network connection once it has loaded.