Blog
Insights on invoicing APIs, e-invoicing compliance, and building fintech infrastructure.
VAT invoicing rules in Estonia: rates, registration and invoice content
Estonia applies four VAT rates:
Read moreVAT invoicing rules in Luxembourg: rates, franchise limit and invoice content
Luxembourg applies four VAT rates:
Read moreVAT invoicing rules in Finland: rates, registration and invoice content
Finland applies three VAT rates to most domestic sales:
Read moreSingapore GST invoicing rules: rate, threshold and credit notes
The current GST rate is 9%. IRAS states this on its current rates page. The rate has applied since 1 January 2024.
Read moreNew Zealand GST invoicing rules: rate, threshold and corrections
GST is charged at 15% on most goods and services sold in New Zealand. Inland Revenue (IRD) states this rate directly.
Read moreCanada GST and HST invoicing rules: rates, credit notes and retention
Canada does not have one national sales tax rate. The federal goods and services tax (GST) is 5% and applies across the country. Some provinces combine their provincial tax with GST into a single harm...
Read moreUnited States sales tax invoicing rules: credit notes and record retention
Sales tax in the United States is set by states and many local jurisdictions. There is no single national rate, so this article does not list rates or thresholds. Check the revenue agency of each stat...
Read moreSweden VAT invoicing rules for integration engineers
Sweden's standard VAT rate is 25%. It applies to almost all goods and services. The reduced rate of 12% covers restaurant and catering services, hotel and lodging, camping, and repairs of bicycles, sh...
Read moreNetherlands VAT invoicing rules for technical founders
The Netherlands has three VAT rates. The general rate is 21%. The reduced rate is 9%, and the 0% rate applies to supplies such as goods shipped from the Netherlands to customers abroad and goods held...
Read moreIreland VAT invoicing rules for integration teams
Ireland's standard VAT rate is 23%. Revenue's current rates table also lists a reduced rate of 13.5%, a second reduced rate of 9%, and a livestock rate of 4.8%. Each product or service falls under one...
Read moreIceland VAT invoicing rules for developers
If your business sells taxable goods or services in Iceland, you need to know which VAT rate applies, when you must register, what a sales invoice must show, and how long to keep records. This guide c...
Read moreUK VAT invoicing rules for technical founders
If your business makes taxable supplies in the UK, you need to know which VAT rate applies, when you must register, and what a VAT invoice must contain. This guide covers those general rules. The rule...
Read moreNorway VAT invoicing rules for integration engineers
If your business sells taxable goods or services in Norway, you need to know which VAT (merverdiavgift, MVA) rate applies, when you must register, what each invoice must show, and how long to keep rec...
Read moreSouth Africa VAT invoicing rules: rates, registration and tax invoices
The standard VAT rate is 15 percent, according to SARS. SARS also says that a limited range of goods and services is zero-rated or exempt, so check the rate for each product before you configure it.
Read moreEstonia invoicing rules: 24% VAT, public-sector e-invoices and timing
The standard VAT rate in Estonia has been 24% since 1 July 2025, according to the Tax and Customs Board (EMTA). Check the rate for each product or service before you set defaults, because the rate dep...
Read moreQatar tax rules for software teams: no VAT yet, excise and a draft e-invoicing law
Qatar does not currently levy VAT. The General Tax Authority (GTA) lists the taxes it administers, and VAT is not among them. This means no VAT invoice format rules apply to you today. Qatar does have...
Read moreHong Kong invoice and record-keeping rules for software teams
Hong Kong does not levy sales tax or VAT. The main business tax is profits tax, administered by the Inland Revenue Department (IRD). Because there is no indirect consumption tax, you do not need to fo...
Read moreNew Zealand GST invoicing rules: taxable supply information
New Zealand charges goods and services tax (GST) at 15%. You must register when your turnover was at least NZ$60,000 in the last 12 months, or you expect it to reach that level in the next 12 months....
Read moreAustralia GST tax invoice rules for software teams
Australia applies a 10% goods and services tax (GST) to most goods and services sold in the country. A business must register for GST when its GST turnover reaches A$75,000 or more. Non-profit organis...
Read moreCanada GST and HST invoicing rules for software teams
Canada applies two consumption taxes to business supplies: the federal goods and services tax (GST) and the harmonized sales tax (HST). GST is 5% on taxable supplies in the provinces that do not use H...
Read moreUS sales tax on invoices: what software teams need to capture
In the United States, sales tax is set by state and local governments. Rates, taxable goods and services, and filing rules vary by jurisdiction, so there is no single national invoice format you can b...
Read moreNorway e-invoicing rules for public procurement
Norway requires electronic invoices in public procurement. The rule is set by FOR-2019-04-01-444, a regulation under the Public Procurement Act (anskaffelsesloven). If you sell to public buyers, this...
Read moreUK VAT e-invoicing mandate: what software teams need to know
The UK government has announced that businesses will have to issue VAT invoices electronically. The Budget 2025 document says: "From April 2029, businesses will be required to issue all VAT invoices a...
Read moreSweden e-invoicing rules for software teams
The Swedish e-invoicing rule that is in force today is SFS 2018:1277, the Act on electronic invoices as a result of public procurement (lag om elektroniska fakturor till följd av offentlig upphandling...
Read moreIreland e-invoicing rules for software teams
Ireland is introducing mandatory eInvoicing in phases. Revenue's Phase One press release says that from 1 November 2028, VAT-registered large corporates must issue eInvoices for domestic business-to-b...
Read moreBelgium e-invoicing rules for software teams
Since 1 January 2026, structured electronic invoicing is compulsory for transactions between Belgian enterprises that are liable to VAT (B2B). The official Belgian e-invoicing portal states that all B...
Read moreSlovenia e-invoicing rules for software teams
Slovenia is moving business-to-business invoicing to electronic exchange. The National Assembly adopted the Act on the Exchange of Electronic Invoices and Other Electronic Documents (ZIERDED) on 23 Oc...
Read moreAustria now lets customers collect electronic receipts at the point of sale
Since 1 October 2026, Austrian businesses can offer electronic receipts in a new way. Besides sending a receipt by email or through an app, a business can make it available at the till. The customer s...
Read moreCzech EET 2.0 starts on 1 January 2027
The Czech Republic is replacing its sales-registration system, EET, with EET 2.0. The new law, Act No. 180/2026 Coll. on sales registration, was published in the Collection of Laws on 15 October 2026....
Read moreUAE updates e-invoicing provider accreditation ahead of the 2027 rollout
The UAE Ministry of Finance has replaced its e-invoicing provider framework. Ministerial Decision No. 168 of 2026 took effect on 1 October 2026. It replaces Ministerial Decision No. 64 of 2025 and its...
Read moreCroatia's B2C fiscalization rules change from 1 January 2027
Croatia has amended the rulebook for fiscalizing invoices issued to final consumers. The changes take effect on 1 January 2027. If you issue consumer receipts in Croatia, two changes matter most: the...
Read moreSlovakia starts structured B2B e-invoicing on 1 January 2027
From 1 January 2027, Slovakia requires structured electronic invoices for many domestic B2B supplies. The rule is in the VAT Act, as amended by Act No. 385/2025. Slovak businesses that supply goods or...
Read moreSpain sets the dates for mandatory B2B e-invoicing: October 2027 and 2028
Spain has published the order that sets up its public e-invoicing platform, and it fixes the clock for mandatory B2B invoicing. Businesses with turnover above €8 million have until 6 October 2027. Eve...
Read moreBulgaria proposes a higher VAT threshold and structured e-invoicing from 2028
Bulgaria's Ministry of Finance has published a draft amendment to the Value Added Tax Act. It would raise the mandatory VAT registration threshold from 1 January 2027, and require structured e-invoice...
Read moreSlovenia proposes VAT Act changes for EU VAT in the Digital Age
If you sell across EU borders, use an online marketplace, or rely on a special VAT scheme, a Slovenian draft matters to you. The Ministry of Finance has proposed amendments to the Value Added Tax Act...
Read moreUBL Invoice Example: XML Fields and Validation Explained
A UBL invoice is an XML document whose element names, order, and namespaces are defined by the OASIS Universal Business Language schemas. Below is a complete UBL 2.1 invoice you can copy, save as ubl-...
Read moreBuilding Multi-Currency Invoicing: Complete Developer Guide for Global SaaS Platforms
Meta Description: Learn how to implement multi-currency invoicing API for international billing. Complete guide covering currency conversion, tax handling, and real-world code examples for backend eng...
Read moreMarketplace Invoice Management: Seller Isolation & Compliance
Title: Marketplace Invoice Management: Seller Isolation & Compliance for Multi-Vendor Platforms
Read moreHow to Add White-Label Invoicing to Your SaaS Product (Complete Guide)
Target Keywords: white label invoicing, embedded invoicing, SaaS invoicing integration
Read moreCross-Border Invoice Compliance: Global Tax Automation
Target Keyword: "cross border invoicing"
Read moreMigrating from Legacy Billing: Step-by-Step API Transition
Target Keyword: "billing system migration"
Read moreWhat Are The Basic Features Of Each Invoicing API
Instead of coding everything from scratch, most companies integrate an invoicing API. But not all APIs are equal. Some only handle the basics; others go deep into compliance, automation, and even embe...
Read moreHow does E-invoice Archiving work? (2025 and beyond regulations)
E-invoicing is not only about sending a digital invoice, it’s also everything that happens after. In most countries, storing and archiving that invoice correctly is legally mandatory, and getting it w...
Read moreWhat is the reverse-charge mechanism?
If your platform touches cross-border services or VAT compliance, the reverse-charge mechanism isn’t just a nice-to-have feature - it’s mandatory. Get it wrong, and you risk fines, rejected invoices,...
Read moreWhat Are Simplified E-invoices
Most businesses hate admin. Even more so when invoicing. Imagine a 10-step process just to charge a coffee.
Read moreWhat Is The End User Experience of Invoicing APIs (For Your Platform and Clients)
You add invoicing to your platform. Great. But your users don’t care about technical specs…they care about why they should use it. Why invoice through you, and not their accountant or some app they al...
Read moreHow Invoicing APIs Work (Including Setup, Invoice Creation, and Extra Features)?
What exactly is an invoicing API? If you're handling invoices manually or using outdated systems, you're likely wasting time, risking compliance issues, and missing automation opportunities.
Read moreHow Peppol Network Works?
E-invoicing mandates are no longer a future concern—they’re arriving country by country, and fast. Failing to adapt can cost you time, money, and compliance headaches. But the good news? There’s a glo...
Read moreHow E-invoicing Works? A Guide From Creation To Payment
E-invoicing isn’t just a buzzword—it’s a regulated, structured way of issuing invoices that’s already mandatory in many countries. But how does it actually work behind the scenes?
Read moreHow to Combine Embedded Finance and Invoicing
Tired of chasing late payments and dealing with cash flow issues? Invoices with embedded finance solve that by letting clients pay instantly through QR codes and payment links. Faster payments, better...
Read morePeppol Access Points
Struggling with cross-border invoicing? Peppol simplifies it all—secure, fast, and compliant e-invoicing that saves time and cuts costs. For business owners, it’s a game-changer: faster payments, redu...
Read moreWhat is UBL Format and Why is It Important for Your Business
Since 2015, e-invoicing has been mandatory when exchanging documents with public administrations in some regions, and it is gradually becoming mandatory for all companies worldwide. For this reason, g...
Read moreWhy is Peppol BIS Standard Important for Your SaaS
Electronic invoicing is no longer just a buzzword—it's becoming a global standard, with Peppol BIS Billing 3.0 leading the charge. For SaaS businesses, this isn’t just another compliance measure; it’s...
Read moreWhat is Peppol and How to Maximize Its Benefits for Your Business
Peppol is a network that helps businesses and governments send e-invoices and other documents across borders easily. It makes sure everything works smoothly between different systems, speeds up transa...
Read moreUnderstanding White-Labeled Invoicing Services
White-labeling refers to the practice of licensing another product or service and rebranding it as your business' own. This tactic allows companies to leverage the innovations of specific market leade...
Read moreHow to Use a Universal Invoicing API to Create New Financial Services Revenue Streams
Universal Invoicing APIs provide a simple interface that allows companies to weave invoicing features seamlessly into their existing platforms, ushering in an era where services communicate effortless...
Read moreE-invoicing vs Fiscalization
Think of fiscalization as a government-controlled mechanism that tracks and documents sales transactions for tax objectives. In other words, it's a vigilant watchdog that ensures no sales slip through...
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Start with one workflow, not a whole rewrite
Free sandbox with no time limit. Prove one entity and one invoice flow before deciding how much UI, compliance, and rollout surface you want to own.