Producing an invoice is not hard, and every tool below does it well. Two things still separate them, and neither shows up in a feature comparison: what the tool does in the weeks after an invoice goes unpaid, and whether it satisfies the invoicing rules of the country you are in.
This covers invoicing tools rather than full accounting platforms. Xero and QuickBooks are excellent and out of scope — if you need double-entry bookkeeping, a payroll module and an accountant's login, you are shopping in a different category and the cheapest thing here will not do.
How we ranked these
- What happens after you send it. Reminders that go out without you remembering, payment status you can see at a glance, and a record of what was chased and when.
- What one person actually pays. Most of this category is priced per account rather than per user, which makes the usual per-seat comparison misleading.
- Whether free means free. Several tools here have a genuine free tier; one has no paid tier at all. That is worth more than a discount.
- Whether it fits your rules. An invoice that is beautiful and non-compliant is a liability, and this is where local tools beat global ones.
What we did not score on
Template design and the number of currencies supported. Every tool has enough templates and more than enough currencies. Neither has decided a purchase in years.
The shortlist at a glance
| Tool | Best for | From | Free tier |
|---|---|---|---|
| Zoho Invoice | One person who wants to pay nothing | Free | The whole product |
| Invoice Ninja | Anyone who wants to self-host | $14 account/mo | 5 clients |
| Wave | Invoicing plus basic bookkeeping | $19 account/mo | Unlimited invoices |
| FreshBooks | An established tool with support | $23 account/mo | None |
| Bonsai | Freelancers who also send contracts | $9 user/mo, annual | None |
| Oplero | Invoices that come from tracked work | Free during beta | Everything |
The ranking, tool by tool
Rank 1:Zoho Invoice
A one-person business that wants a complete invoicing tool and no bill
Free, with no paid tier at all.Prices checked July 27, 2026
Strengths
- Genuinely free — not a limited tier under a paid product, but the whole thing
- Estimates, a client portal, recurring invoices and reminders, all included
- Mature: it was a paid product for thirteen years before the price came off
Trade-offs
- The commitment to stay free is a promise on a marketing page, not a contract
- Everything pulls toward the rest of Zoho, which is fine until you do not want the rest of Zoho
- No sense of local invoicing rules outside the markets Zoho targets
Verdict. The obvious first stop for anyone invoicing a handful of clients. If it stops being free the migration will hurt, but paying nothing for several years first is a reasonable bet.
Rank 2:Invoice Ninja
People who want their invoice data on their own server
Free for five clients. Ninja Pro is $14 a month, or $140 a year — advertised as two months free.Prices checked July 27, 2026
Strengths
- The only tool here you can self-host, which settles the data-residency question outright
- Time tracking and a client portal are in the product rather than bolted on
- The free tier is unlimited on invoices and limited only on clients, which is the right way round for a freelancer
Trade-offs
- Self-hosting is a real commitment — backups, updates and mail deliverability become yours
- The hosted version is less polished than the commercial competition
- Five clients is a ceiling you can hit in a first year
Verdict. The strongest answer if you care where the data lives, and a solid one if you do not. Just be honest about whether you want to run a server.
Rank 3:Wave
Invoicing that needs to sit next to basic bookkeeping
Free tier with unlimited invoices. Pro is $19 a month or $190 a year. Card payments cost 2.9% plus $0.60 per transaction on every tier.Prices checked July 27, 2026
Strengths
- Unlimited invoices and estimates on the free tier, plus actual bookkeeping records
- The accounting side means your invoices are not stranded away from the rest of the numbers
- One of the few free tiers here with no client count attached
Trade-offs
- Payment processing fees apply on the free tier too, so "free" describes the software and not the money
- The bookkeeping is basic — it is not a substitute for an accountant's platform
- Availability and payment features vary by country more than the pricing page suggests
Verdict. The best free tier for someone who also wants to keep books. Read the transaction fees before you decide free is free.
Rank 4:FreshBooks
A small business that wants a known name and someone to call
From $23 per account a month, with one user included and each extra user $11. A 90% promotion was running when this was checked; $23 is the standing rate.Prices checked July 20, 2026
Strengths
- The most polished experience in this comparison, and the one clients are most likely to recognise
- Time tracking, expenses and proposals in the same product
- Real support, which matters more than it sounds when an invoice is disputed
Trade-offs
- The most expensive entry price here for a single person
- No free tier at all, only a 30-day trial
- Extra users cost almost half the base price each
Verdict. Worth the money if invoicing is central to how you work and you want a product that never surprises you. Hard to justify against Zoho Invoice if you are one person.
Rank 5:Bonsai
Freelancers whose paperwork starts before the invoice
From $9 per user a month billed annually, $15 monthly. No free tier — a seven-day trial.Prices checked July 27, 2026
Strengths
- Proposals, contracts and e-signatures alongside invoicing, which is the actual freelance workflow
- Cheapest per-person price here if you genuinely need one seat
- Opinionated in a helpful way: it has a view about how freelance work should run
Trade-offs
- Priced per user while most of this category is per account, so a two-person team costs double
- Seven days is a short trial for something you only exercise at month end
- Weaker than the specialists on invoicing alone — you are buying the suite
Verdict. The right buy if contracts and proposals matter as much as invoices. If you only need to bill, you are paying for a suite you will not open.
Rank 6:Oplero
Teams whose invoices are the end of tracked work, not a separate chore
Free during the beta — every module, no seat limit. $1.99 per user a month afterwards.
Strengths
- The invoice is built from tracked hours and tasks, so a line item can cite the work it bills
- Payments matched automatically against incoming bank notifications and marked paid
- Invoicing, time, tasks and support are one system, so nothing is re-typed between them
Trade-offs
- Built around Czech invoicing requirements — outside that market it is not a compliance answer
- Still in beta and younger than everything above it
- If you only need to send invoices, a dedicated tool will do it better and cost less attention
Verdict. We are last on purpose again. Five of these do invoicing better than we do as a standalone job. Pick us when the invoice should be a by-product of work already recorded, not a document someone assembles.
The part a global tool cannot solve for you
An invoice has to satisfy the rules of the country you invoice from, and those rules have been moving fast. Italy has required electronic invoicing through its national system for years and extended it to the flat-rate regime in 2024. Germany has required every business to be able to receive an e-invoice since January 2025, with issuing phasing in from 2027 by turnover. Poland's KSeF began phasing in during 2026. Spain's Verifactu was pushed back a full year and now starts in 2027.
What happens when nobody pays
Sending is the easy half. The half that decides whether an invoicing tool earns its price is the four weeks afterwards, and it is barely demonstrated because it is not exciting.
- Automatic reminders on a schedule, so chasing does not depend on you remembering
- A view of what is overdue and by how long, without exporting anything
- Payment matching, so an invoice marks itself paid instead of waiting for someone to reconcile it
- A record of what was sent and when, for the conversation where a client says they never received it
Test that path before you buy. Send an invoice to yourself, let it go overdue in the settings, and see what the tool does on its own. Several do nothing at all.
Which one for which situation
- One person, a handful of clients, no budget — Zoho Invoice.
- You care where the data physically lives — Invoice Ninja, self-hosted.
- Invoicing plus somewhere to keep the books — Wave, after reading the transaction fees.
- You want a known product and real support — FreshBooks.
- Contracts and proposals matter as much as invoices — Bonsai.
- A national e-invoicing mandate binds you — a tool built for that market, ahead of anything on price.
- The invoice should come out of work already tracked — that is where we sit.
The longer version of the buying question
The buying guide goes past the ranking into what to ask before comparing any of these — what a line item can cite, who approves it, and what happens to the money afterwards.