VAT (Value Added Tax)

What Is VAT (Value Added Tax)?

VAT is a consumption tax charged at every stage of a supply chain, with each business remitting only the tax on the value it adds. Sellers charge output VAT, reclaim input VAT on their own purchases, and pay the difference to the tax authority. The final consumer bears the full cost.

How VAT Works

VAT runs on invoices and credits. A business charges VAT on what it sells, which is output VAT, and pays VAT on what it buys, which is input VAT. At the end of each period it subtracts one from the other and remits the balance. If input VAT exceeds output VAT, the business is owed a refund. A hosting provider charges VAT to a software vendor, the vendor reclaims it and charges its own customer, and so on until the final consumer, who has nobody to reclaim from and carries the whole tax. Because every buyer needs a correct invoice to reclaim, VAT is largely self-policing. More than 170 countries use it, including every EU member state and the UK.

How to Calculate VAT

Formula: VAT Due = (Net Sales x VAT Rate) - Input VAT Paid on Purchases

A software company sells EUR 200,000 of subscriptions in a country with a 20 percent VAT rate. It charges customers EUR 40,000 of output VAT and invoices EUR 240,000 in total. In the same quarter it paid EUR 6,000 of input VAT on hosting, contractors, and tools. VAT due is EUR 40,000 minus EUR 6,000, or EUR 34,000. To work backwards from a tax-inclusive price, divide by 1 plus the rate: a EUR 240,000 gross invoice at 20 percent contains EUR 200,000 of net revenue and EUR 40,000 of VAT.

VAT in Plain English

VAT is a tax on spending, collected in installments along the chain instead of all at once at the register. Every business adds tax when it sells and takes credit for the tax it paid when it bought, so nobody pays twice on the same value. Businesses are unpaid collection agents here. That money was never theirs, but it lands in the same bank account as money that is, which is why VAT surprises are almost always cash surprises.

VAT vs Sales Tax

US sales tax is charged once, at the final retail sale, and intermediate buyers present a resale exemption certificate. VAT is charged at every stage, with input credits unwinding the double counting. The consumer ends up in a similar place. The seller does not. Under sales tax, a vendor selling to a reseller often collects nothing and files a certificate. Under VAT, that vendor charges tax, remits it, and the buyer reclaims it, which means both parties need valid registration numbers and accurate invoices for the mechanism to close properly.

Cross-Border VAT: Reverse Charge, Place of Supply, and OSS

For digital services, VAT follows the customer rather than the seller. Selling software to a VAT registered business in another EU member state usually triggers the reverse charge: the seller invoices without VAT, shows the buyer's VAT number and a reverse charge notice on the invoice, and the buyer accounts for both output and input VAT in its own return, netting to zero. Selling to a consumer works differently: the seller charges that country's local rate. Those rates currently run from 17 percent in Luxembourg to 27 percent in Hungary. The One Stop Shop (OSS) exists so a seller can report all such consumer sales through one registration and one quarterly return instead of registering in every member state. Getting any of this wrong is expensive, since an invalid buyer VAT number turns a zero-rated invoice into a liability the seller pays out of pocket.

VAT Registration Thresholds and Compliance

Registration thresholds vary widely. Domestic thresholds inside the EU commonly sit between EUR 35,000 and EUR 100,000 of annual turnover, while the UK threshold is 90,000 pounds. For non-resident sellers of digital services the threshold is frequently zero, meaning a single customer can create an obligation. Once registered, the work is continuous: correct rates, compliant invoices carrying both parties' VAT numbers, returns filed on schedule, remittance on time. VAT also creates a cash cycle. Output VAT arrives from customers early and leaves for the tax authority weeks later, while input VAT goes out to suppliers immediately and returns only on the next filing. Companies in a persistent refund position can wait a full quarter or longer for that cash.

VAT and the Closing Motion

VAT is where cross-border deals lose their last week. A buyer in another country asks for a compliant invoice carrying the right rate, the right registration numbers, and the right reverse charge wording, and one wrong field sends the document back through procurement while the quarter runs out. That is fragmentation at the close: a signed deal that cannot become cash because the paperwork is not clean. Ratio treats invoicing accuracy as part of Close rather than an afterthought in Collect, so the proposal, the contract, and the invoice carry the same tax treatment. Because the seller collects the full contract value upfront through Ratio Trade while the buyer pays over time, VAT obligations land against cash that has already arrived instead of a receivable still in transit.

Common Questions About VAT

Is VAT the same as sales tax?

No. Sales tax is charged once at the final retail sale, while VAT is charged at every stage of the chain with credits for tax already paid. The consumer ends up in a similar position, but the seller's registration, invoicing, and filing obligations differ sharply.

Do I charge VAT to a business in another country?

Usually not, when the buyer is VAT registered in another EU member state and the reverse charge applies. The seller issues a zero-rated invoice showing the buyer's VAT number and a reverse charge note, and the buyer self-accounts. Verify that number before invoicing.

Does VAT count as revenue?

No. VAT collected is money held on behalf of a tax authority, not income. Recording gross invoiced amounts as revenue overstates the top line and hides a liability that surfaces at the next filing.

Key Takeaways

• VAT is a consumption tax collected at each stage of the chain, with businesses remitting output VAT minus input VAT.
• VAT due equals net sales times the rate, less input VAT paid on purchases in the same period.
• Cross-border B2B digital sales usually use the reverse charge, which requires a verified buyer VAT number on the invoice.
• Registration thresholds vary by country and are often zero for non-resident sellers of digital services.
• VAT is a cash timing problem as much as a compliance one, because collection and remittance rarely line up.