8 best invoice software in Singapore (2026 guide)

Key takeaways:

• The best invoice software for your business depends on the currencies you bill in, the customers you serve, and whether you need to meet Singapore's InvoiceNow rules.

• From 1 April 2026, all new voluntary GST registrants in Singapore must transmit invoice data to IRAS through InvoiceNow.¹ Peppol-ready software is now part of the shortlist criteria if you plan to register for GST.

• Airwallex Invoicing lets you create and send invoices in 130+ currencies and accept 160+ local payment methods. It also reconciles payments to invoices automatically.

Choosing the best invoice software for your Singapore business in 2026 isn’t that straightforward. New e-invoicing requirements, updated pricing, and the rise of cross-border billing have all changed how businesses should evaluate their options.

This guide reviews eight invoice software options for Singapore businesses: Airwallex Invoicing, QuickBooks Online, Xero, FreshBooks, Zoho Invoice, HitPay, Stripe Invoicing, and Financio.

If you need a refresher on the basics first, read our guides on what an invoice is and how to send an invoice.

8 best invoicing software in Singapore (2026)

Here’s a quick overview of the 8 best invoicing software in Singapore, before we dive into the individual providers: 

The information in this table has been reviewed to be accurate as of 28 April 2026.

1. Airwallex Invoicing

Airwallex Invoicing is built for businesses that bill customers in more than one currency. You can create and send invoices in over 130 currencies, give customers 160+ local payment methods to pay through, and have payments reconcile to invoices automatically.

Funds settle into your Airwallex multi-currency wallet in the original currency, so you avoid forced FX conversion on every collection. The Explore plan is free, with paid Grow and Accelerate plans for businesses that need higher limits or advanced features.

For Singapore businesses, it pairs naturally with Airwallex's Global Accounts and Corporate Cards, and syncs with Xero, QuickBooks Online, and NetSuite — so it can sit alongside whichever bookkeeping tool you already use, or work as your billing layer if you don't have one yet.

The information in this table has been reviewed to be accurate as of 28 April 2026.

2. Xero

Xero is the most widely used cloud accounting platform in Singapore, with strong invoicing built in. Every plan includes unlimited users on a single organisation, GST handling, and direct bank feeds with DBS, OCBC, and UOB. It also connects to the InvoiceNow / Peppol network through the Xero Network, so it's a fit if you plan to register for GST in 2026.

The catch: multi-currency invoicing is only available on the Premium plan, which is the most expensive of Xero’s three plans.⁶

The information in this table has been reviewed to be accurate as of 28 April 2026.

3. QuickBooks Online

QuickBooks Online (QBO) is Intuit's small business accounting tool and one of the most globally recognised invoicing platforms. The Singapore site lists three main plans — Simple Start, Essentials, and Plus — with promotional first-year pricing well below the global list price. Multi-currency support starts from the Essentials tier upward.⁵

QBO's strength is its depth: invoicing sits inside a full accounting system with bank reconciliation, GST tracking, and a wide app marketplace.

The information in this table has been reviewed to be accurate as of 28 April 2026.

4. FreshBooks

FreshBooks is built around freelancers, agencies, and client-service businesses. Its strengths are project tracking, time tracking, proposals, and client retainers — features that solo consultants and small studios use daily. Pricing is published in US dollars, with a current 70%-off promotion for the first 4 months across all paid tiers.⁷

FreshBooks doesn't offer native InvoiceNow filing or IRAS GST submission, so it's a weaker fit for businesses who are looking for tax compliance.

The information in this table has been reviewed to be accurate as of 28 April 2026.

5. HitPay

HitPay is a Singapore-built payments platform with free invoicing built into its dashboard. There's no monthly subscription — you only pay per transaction, plus a 0.2% software fee on invoicing.¹⁰

For SG SMBs that mostly bill local customers in SGD and want to accept PayNow, cards, GrabPay, ShopeePay, Apple Pay and Google Pay from a single invoice, the proposition is hard to beat on price. HitPay also offers GST handling on invoices and a recurring/repeating invoice feature.³

The information in this table has been reviewed to be accurate as of 28 April 2026.

6. Zoho Invoice

Zoho Invoice is a free, standalone invoicing tool from the wider Zoho ecosystem. It covers the basics well: invoicing, quotes, credit notes, automated payment reminders, online payment acceptance, multi-currency, and a customer portal.

However, note that the tool is invoicing-only. For full GST accounting and IRAS submission you'd need to upgrade to the paid Zoho Books platform.

The information in this table has been reviewed to be accurate as of 28 April 2026.

7. Stripe Invoicing

Stripe Invoicing is the invoicing arm of Stripe Payments. There's no monthly subscription: you pay 0.4% per paid invoice on the Starter tier or 0.5% on Plus, on top of standard Stripe Payments processing fees.⁸

It supports invoicing in 135+ currencies and unlimited dashboard users. It's not a full accounting tool, so most users pair it with Xero or QuickBooks.

Stripe Invoicing works best for businesses already on Stripe for online payments, especially those with high invoice volume from international customers.

The information in this table has been reviewed to be accurate as of 28 April 2026.

8. Financio

Financio is built in Singapore for Singapore SMBs. It's IRAS-compliant, supports InvoiceNow / Peppol, and qualifies for the Productivity Solutions Grant (PSG), which can offset up to half the cost of the software for eligible businesses.⁴

Pricing starts at S$20/month for the Essentials plan with unlimited users — significantly below Xero or QuickBooks at the same user count. The Premier plan unlocks multi-currency invoicing.

The information in this table has been reviewed to be accurate as of 28 April 2026.

InvoiceNow and Singapore GST compliance

InvoiceNow is Singapore’s nationwide e-invoicing network, built on the international Peppol standard.¹ It allows businesses to send and receive invoices in a structured digital format, with invoice data transmitted directly to IRAS for GST reporting.

From 1 April 2026, all new voluntary GST registrants must submit invoice data through the InvoiceNow network. This makes InvoiceNow compatibility a key requirement when choosing invoice software.

The full GST InvoiceNow rollout timeline

Here’s how GST InvoiceNow is rolling out:

The information in this table has been reviewed to be accurate as of 28 April 2026.

What to check before you commit to a tool

To submit invoice data to IRAS, your software needs to be on IMDA's accredited InvoiceNow-Ready Solution Provider (IRSP) list, or you need to connect through an IMDA-accredited Access Point Provider.¹¹

There are three things to verify on any vendor's official documentation before you sign up:

• InvoiceNow / Peppol readiness. Confirm the vendor is listed as an IMDA-accredited IRSP, or that it connects through one.

• GST InvoiceNow submission feature. The feature needs to be present in the product, not just promised on a roadmap. You activate it once your business is registered in the SG Peppol Directory.

• Free-of-charge package eligibility. IMDA and IRAS have published a list of IRSPs offering free InvoiceNow packages for GST-registered businesses, available until 31 March 2027.

Grants that can offset your software cost

• Productivity Solutions Grant (PSG): Eligible SMEs using an IMDA-accredited IRSP can receive up to S$30,000 for IT solutions and equipment, including InvoiceNow-Ready Solutions.¹¹

• New SME grant: A new grant of up to S$1,000 will be introduced for SMEs to defray operational costs of adopting InvoiceNow-Ready software.¹¹

• Larger business grant: A new grant of up to S$5,000 will be provided for early adopters that are larger businesses.¹¹

How to choose the right invoicing software for your business

Pricing is the easiest thing to compare, but it's rarely what makes or breaks the decision. Use these six criteria to narrow your shortlist:

1. InvoiceNow / Peppol readiness

If you're GST-registered or planning to register in 2026, this is now a hard requirement. Check that the vendor is on IMDA's accredited InvoiceNow-Ready Solution Provider list, or that it connects through an accredited Access Point.

2. Singapore GST 9% support

Your software needs to apply the correct 9% GST rate, generate compliant tax invoices, and produce reports that map to IRAS's GST F5 return.

3. Multi-currency invoicing

If you bill any customers outside Singapore, multi-currency support stops being optional. Two things to check:

• Whether multi-currency is included on entry-level plans, or only the top tier.

• Whether the platform settles funds in the original currency or auto-converts. Forced conversion on every invoice can quietly cost more than the subscription itself.

4. Payment methods accepted

Look at how your customers actually want to pay you. For SG SMEs that's usually some mix of PayNow, cards, and digital wallets like GrabPay or ShopeePay.

• HitPay has the broadest local payment-method coverage — PayNow, cards, GrabPay, ShopeePay, Apple Pay, and Google Pay from a single invoice.³

• Stripe Invoicing is strongest for international cards and global payment methods.⁸

• Airwallex accepts 160+ local payment methods worldwide, useful if you sell across multiple markets.

5. Integrations with your accounting and operations stack

Invoicing software is rarely the only system in your finance stack. Check that your shortlist connects with:

• Your accounting tool (or doubles as one)

• Your bank — direct feeds with DBS, OCBC, and UOB save hours of manual reconciliation each month

• Your CRM, e-commerce platform, or POS

6. Productivity Solutions Grant (PSG) eligibility

The PSG can offset up to S$30,000 of an IMDA-accredited InvoiceNow-Ready Solution. A new SME grant of up to S$1,000 is also being introduced to defray operational costs of adopting InvoiceNow-Ready software.¹¹

If your business is PSG-eligible, prioritising a pre-approved vendor can meaningfully reduce your effective software cost.

Why Singapore businesses choose Airwallex for invoicing

Most invoicing tools do one job well: they help you bill local customers and get paid in SGD. That's enough if your customers are all in Singapore and you only deal with one currency.

But for many Singapore businesses, the reality is more complex. You may be paying overseas suppliers, collecting from international customers, holding balances in multiple currencies, and managing spending across different markets. A basic invoicing tool isn’t built to handle this full workflow.

That's where Airwallex comes in. Instead of using separate tools for invoicing, FX, accounts, and spend, you can manage everything in one platform designed for cross-border operations from the start. Here’s what you get with Airwallex:

Invoice in 130+ currencies and accept 160+ local payment methods

Airwallex Invoicing allows you to create and send invoices in over 130 currencies, while letting customers pay via 160+ local payment methods, including cards, bank transfers, and digital wallets.

This reduces friction on your customers’ end, and helps you get paid faster.

Get paid like a local in 20+ countries

Airwallex Global Accounts give you local bank details in 20+ countries, so customers can pay you through their domestic banking system instead of an international wire. You avoid intermediary bank fees, your customers avoid SWIFT charges, and payments arrive faster.

Hold 20+ currencies with no forced settlement

Most invoicing tools auto-convert to SGD the moment a customer pays. Airwallex's like-for-like settlement keeps funds in the currency the invoice was paid in, across 20+ currencies.

You can hold balances in your wallet, convert at interbank rates when the timing suits you, and use the same currency to pay overseas suppliers — avoiding unnecessary FX fees.

Reconcile invoices and bills automatically

When a customer pays an Airwallex invoice, the payment reconciles against the invoice in real time and the status updates to "Paid" in your dashboard.

On the payables side, Airwallex Bill Pay extracts bill data using OCR, routes it through custom approval workflows, and syncs both bills and payments back to NetSuite, Xero, or QuickBooks.

Use it standalone, or together with your accounting software

Airwallex Invoicing works on its own if you don't yet have an accounting platform. If you already use Xero, QuickBooks, or NetSuite, Airwallex can also sit behind them — handling the multi-currency receivables, payments, and reconciliation, while your accounting software keeps the books and files your GST.

Frequently asked questions (FAQs)

What is the best invoice software in Singapore?

There's no single best invoice software for every business — the right pick depends on whether you're GST-registered, how many currencies you bill in, and how many users need access. Xero and QuickBooks Online are the strongest all-rounders for GST-registered SG SMEs;⁵ ⁶ Financio is the most affordable IRAS-compliant option;⁴ and Airwallex Invoicing is the best fit if cross-border collections are core to your business.

Do I need InvoiceNow-ready software in 2026?

Yes, if you plan to register for GST. From 1 April 2026, all new voluntary GST registrants must transmit invoice data to IRAS through the InvoiceNow network.¹¹ The mandate then extends to existing GST-registered businesses in phases between 2028 and 2031, based on annual turnover.¹¹

What is the cheapest invoice software in Singapore?

Zoho Invoice is free in Singapore. Airwallex Invoicing's Explore plan is also free, and includes a multi-currency business account. Among paid options, FreshBooks Lite is the cheapest at US$6.90/month (70% off promo, standard US$23/month),⁷ followed by QuickBooks Online Simple Start at S$15.50/month on its current SG promotion.⁵

Can I use Xero or QuickBooks for InvoiceNow?

Yes. Both are connected to the InvoiceNow / Peppol network and can transmit invoice data to IRAS for GST reporting.⁵ ⁶ You'll need to register your business in the SG Peppol Directory and activate the GST InvoiceNow submission feature inside the software before you can start filing.¹¹

Is Stripe Invoicing cheaper than a subscription tool?

It depends on volume. Stripe Invoicing has no monthly fee — you pay 0.4% per paid invoice (Starter) or 0.5% (Plus), plus standard Stripe Payments processing fees on top.⁸ For low-volume businesses, that's cheaper than a S$39+/month subscription. For high-volume billers, the per-invoice fee can quickly exceed a flat subscription.

Does the PSG grant cover invoicing software?

Yes — eligible SMEs can claim up to S$30,000 under the Productivity Solutions Grant (PSG) for IT solutions, including IMDA-accredited InvoiceNow-Ready Solutions.¹¹ A separate new SME grant of up to S$1,000 is also being introduced specifically to defray the operational costs of adopting InvoiceNow-Ready software.¹¹

Sources:

1.  https://www.imda.gov.sg/how-we-can-help/nationwide-e-invoicing-framework

2.  https://www.zoho.com/en-sg/invoice/pricing/

3.  https://hitpayapp.com/sg/invoicing

4.  https://financio.co/sg/pricing

5.  https://quickbooks.intuit.com/sg/pricing/

6.  https://www.xero.com/sg/pricing-plans/

7.  https://www.freshbooks.com/pricing

8.  https://stripe.com/invoicing/pricing

9.  https://central.xero.com/s/article/About-the-Xero-Network

10.  https://hitpayapp.com/pricing

11.  https://www.iras.gov.sg/taxes/goods-services-tax-(gst)/gst-invoicenow-requirement

This publication does not constitute legal, tax, or professional advice from Airwallex, nor does it substitute seeking such advice, and makes no express or implied representations / warranties / guarantees regarding content accuracy, completeness, or currency. If you would like to request an update, feel free to contact us at [[email protected]]. Airwallex (Singapore) Pte. Ltd. (201626561Z) is licensed as a Major Payment Institution and regulated by the Monetary Authority of Singapore.