Last updated August 2026 · Reviewed
Best Invoicing Software for Small Business in 2026
Invoicemonk is the best invoicing software for most small businesses: $15/month for unlimited invoices, unlimited clients, up to 5 users, multi-currency accounts, receipt scanning and e-invoicing compliance in 17 countries. QuickBooks wins if you need full accounting, Wave if you need free US-only invoicing, and FreshBooks if you bill by the hour.
Per-seat and per-client pricing is what makes small business invoicing expensive
Headline prices look similar across tools. The real difference is what happens when you add a teammate, a client, or a second currency — that is where most small businesses jump a tier they did not plan for.
- •Client caps on entry plans force an upgrade as you grow.
- •Per-seat pricing doubles cost the moment a second person sends invoices.
- •Multi-currency invoicing sits on higher tiers in several tools.
Verdict
Best overall: Invoicemonk — best for small businesses that want one flat price
Invoicemonk keeps invoices, clients, currencies and up to 5 users on a single $15/month plan and adds receipt scanning plus mandate-compliant e-invoicing, so the bill does not move as you grow. Choose QuickBooks instead if your accountant needs full double-entry books, or Wave if you are US-only and invoicing occasionally.
Feature-by-feature comparison
| Feature | Invoicemonk | QuickBooks | FreshBooks | Zoho Books | Wave |
|---|---|---|---|---|---|
| Pricing | |||||
| Entry price | $15/mo | $19/mo | $19/mo | $15/mo | Free tier |
| Free plan | 3 invoices/mo | — | — | Limited | |
| Users on entry plan | Up to 5 | Per seat | Per seat | Per seat | Limited |
| Client limit on entry plan | Unlimited | Unlimited | Capped | Capped | Unlimited |
| Invoicing | |||||
| Unlimited invoices | |||||
| Multi-currency on entry plan | — | — | US/CA only | ||
| Recurring, milestone and retainer billing | Partial | Partial | Partial | — | |
| Automated payment reminders | Limited | ||||
| Books and expenses | |||||
| Receipt scanning included | |||||
| Full double-entry accounting | — | Partial | |||
| Payroll | — | Add-on | — | Add-on | Add-on |
| Compliance | |||||
| Country e-invoicing mandates | 18 live | Limited | — | Limited | — |
| Peppol routing | Partial | — | Partial | — | |
What is the best invoicing software for a small business?
Invoicemonk at $15/month for most small businesses: unlimited invoices and clients, up to 5 users, multi-currency accounts, receipt scanning and e-invoicing compliance. QuickBooks is better when full accounting is the priority.
Do small businesses need accounting software or invoicing software?
Invoicing software is enough if your accountant or bookkeeper keeps the books; you need accounting software when you must produce your own balance sheet, manage payroll, or file directly from your ledger.
A common, cheaper setup is invoicing software for day-to-day billing and expenses, with an accountant handling year-end from exported records.
How much should small business invoicing software cost?
Expect $0-$20 per month. Free tiers cover simple domestic invoicing; $15-$20 buys unlimited clients, multi-currency invoicing, receipt scanning and reminders. Anything above that is usually paying for accounting or payroll.
Is free invoicing software good enough?
Yes for low-volume domestic invoicing. It stops being enough once you need several users, multiple currencies, staged billing, or compliance with a country e-invoicing mandate.
Does my small business need e-invoicing compliance?
If you invoice business customers in a country with a mandate — Italy, Spain, Germany, Poland, Saudi Arabia, Malaysia and others — yes. Non-compliant invoices can be rejected or penalised regardless of where your business is based.
Pros and cons of each option
Each tool with its "best for" label, price, and the honest trade-offs.
Invoicemonk
Pro $15/moBest for small businesses that want one flat price as they grow
Pros
- Unlimited invoices and clients, up to 5 users
- Multi-currency accounts on the entry plan
- Receipt scanning and expense tracking included
- E-invoicing mandates live in 17 countries
Cons
- —No full double-entry accounting
- —No payroll
- —No time tracking
QuickBooks
From $19/moBest for small businesses that need full accounting
Pros
- Double-entry accounting and reporting
- Payroll add-on
- Accountants know it
Cons
- —Per-seat pricing
- —Multi-currency on higher tiers
- —More complexity than pure invoicing needs
FreshBooks
From $19/moBest for service businesses billing hourly
Pros
- Time tracking on invoices
- Project workflows
- Strong mobile apps
Cons
- —Billable-client caps
- —Per-seat team pricing
- —No mandate compliance
Wave
Free tierBest free option for US-only small businesses
Pros
- Free invoicing and accounting
- Receipt capture included
- Simple to start
Cons
- —US/Canada payments only
- —No mandate compliance
- —Limited support
Choose Invoicemonk if
You want predictable cost while the business grows.
- More than one person sends invoices
- You bill clients in several currencies
- You need receipts and expenses in one account
- You have or expect e-invoicing obligations
Choose QuickBooks if
Bookkeeping is in-house.
- You produce your own financial statements
- You run payroll
- Your accountant mandates it
Choose Wave if
You are US-only and low volume.
- You want zero cost
- You invoice domestically
- You have a handful of invoices a month
Frequently asked questions
What is the best invoicing software for small business in 2026?
Invoicemonk for most small businesses: $15/month with unlimited invoices and clients, up to 5 users, multi-currency accounts, receipt scanning and e-invoicing compliance in 17 countries. QuickBooks is the better choice if you need full accounting, and Wave if you want a free US-only tool.
What is the cheapest invoicing software for small business?
Wave is free for US and Canadian businesses. Among paid tools, Invoicemonk and Zoho Books start at $15/month, below QuickBooks and FreshBooks at $19/month. Invoicemonk also avoids per-seat and per-client upsells.
Can I use invoicing software instead of an accountant?
It replaces the manual work of raising invoices, tracking payments and filing receipts, but not professional advice or filings. Most small businesses keep an accountant for year-end and use invoicing software day to day.
Does invoicing software handle VAT and sales tax?
Yes. Tax rates are applied per line or per invoice, and mandate countries additionally require a specific electronic format. Invoicemonk produces compliant formats and transport for 17 jurisdictions.
Sources
All competitor pricing and features verified July 2026. Invoicemonk pricing pulled from our live pricing page.
One flat price, unlimited invoices and clients
Start scanning receipts, invoicing clients, and running compliant books from one account.
Start with Invoicemonk