Quick take: Every tool on this list is genuinely free to send invoices — the real difference is where each one makes its money instead. Wave and Square earn on payment processing fees (2.9%+ per card transaction). Zoho Invoice charges nothing even for payments, but routes them through a third-party gateway that charges its own fee. PayPal is free but has the highest per-transaction cost of the group. None of these are "free trials" — pick based on which fee structure costs you less at your actual invoice volume.
Who This Is For
This is for a freelancer, solopreneur, or small service business that needs to send professional invoices and get paid, without a monthly software bill. If you also need full double-entry bookkeeping and payroll, see our QuickBooks vs Wave vs FreshBooks comparison for the accounting-first angle instead.
Fee structures and limits change without much notice — always confirm current numbers on each vendor's official pricing page before choosing.
What Works Well
Wave's free plan bundles invoicing with genuine basic bookkeeping — bank connections, expense tracking, and financial reports come at no cost, which none of the others match at this price point. Zoho Invoice is the most feature-complete of the group: time tracking, a client portal, multi-currency support, and automated reminders are all included free, and because it doesn't take a payment cut itself, high-volume invoicers can come out ahead if they're willing to connect their own gateway. Square's real advantage is unifying online and in-person selling — if you ever take a card payment face-to-face, having invoicing and point-of-sale in the same account avoids reconciling two separate systems.
Where It Falls Short
Wave's 2.9% + $0.60 card fee is on the higher end of this group, and it adds up fast on frequent, low-dollar invoices — a $50 invoice loses over 4% to fees alone. Zoho's ~1,000 invoice/year cap sounds generous until you realize that's under 3 invoices a day, which a busier freelance operation can hit faster than expected; its interface is also built as a gateway into the wider Zoho ecosystem, which can feel like overkill if invoicing is all you need. PayPal is the most expensive per transaction of any tool here, and it lacks real client management or recurring billing — it's a payment link generator more than an invoicing platform.
Alternatives Worth Considering
If none of these fee structures work for your volume, it's worth checking whether your existing payment processor already includes free invoicing — Stripe's usage-based invoicing (a small percentage per paid invoice, no subscription) can undercut all four of these once your invoice value climbs. Self-hosted open-source options remove the per-transaction fee model entirely, at the cost of setup time and comfort with basic server management.
Final Verdict
If you want invoicing and light bookkeeping together with zero setup friction, Wave remains the easiest all-in-one starting point despite the higher card fee. If invoice volume matters more than payment fees and you're willing to connect your own gateway, Zoho Invoice's feature set is hard to beat for $0. If you already sell in person, Square's unified system saves real reconciliation time even if the per-transaction cost isn't the absolute lowest on this list.
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