inv.so vs Wave (2026 Comparison)
Wave is free. That is its biggest selling point, and it is a real one. You get invoicing, accounting, and receipt scanning without paying a monthly fee. The tradeoff: ads everywhere, limited invoice design, and payment processing fees that add up faster than you would expect.
inv.so is a paid tool built specifically for invoicing. No accounting features, no ads, no clutter. Just clean invoices with AI-powered creation, custom design templates, and online payments via Stripe.
Quick Comparison
| Feature | inv.so | Wave |
|---|---|---|
| Monthly cost | From $3.33/mo (yearly) | Free (ad-supported) |
| Pro tier | $8.33/mo (yearly) / $9.99/mo | Free (one tier) |
| Payment processing | 1% platform fee (Starter) / 0% (Pro) + Stripe fees | 2.9% + $0.30 per transaction |
| Free trial | 14-day Pro trial | Free forever (with ads) |
| Unlimited invoices | Yes | Yes |
| AI invoice creation | Yes | No |
| Custom template upload | Yes (PDF/PNG) | No |
| Online payments | Yes (Stripe) | Yes (Wave Payments) |
| Expense tracking | No | Yes |
| Accounting | No | Yes |
| Receipt scanning | No | Yes |
| Multi-currency | Yes | Yes |
| Client CRM | Yes | Basic |
| Partial payments | Yes | No |
| Ad-free | Yes | No |
| Dark mode | Yes | No |
What Actually Matters
Free Is Not Always Cheaper
Wave is free until you accept online payments. Then it is 2.9% + $0.30 per transaction. On a $5,000 invoice, that is $145.30 in fees. On a $2,000 invoice, it is $58.30. Those fees come straight out of your margin on every single payment.
On inv.so Pro ($8.33/mo yearly), you pay zero platform fees -- just standard Stripe card processing rates, which are lower than Wave's. If you invoice more than a few thousand dollars per month, the $8.33 subscription pays for itself multiple times over.
Even on inv.so Starter at $3.33/mo with the 1% platform fee, a $5,000 invoice costs $50 in platform fees -- still meaningfully less than Wave's $145.30. The math gets more dramatic as invoice amounts grow.
Wave's "free" is a marketing strategy, not a cost savings. They make money from payment processing and ads. You pay either way.
Ad-Supported Means Compromise
Wave makes money from ads and financial services upsells. That means your invoicing dashboard has promotional content, the interface nudges you toward their paid services (payroll, advisory), and the design prioritizes ad placement over your workflow.
You are not Wave's customer. You are Wave's product. The tool is designed to convert you into a paying user of their premium services, not to give you the cleanest possible invoicing experience.
inv.so has no ads, no upsell banners, no "try our payroll" prompts. You pay a subscription. The interface is built entirely around getting invoices out the door.
Invoice Design Is Night and Day
Wave gives you one basic invoice template. You can add your logo, change colors, and adjust a few fields. That is the extent of customization. Every Wave invoice looks like a Wave invoice -- which is to say, generic.
inv.so lets you upload your own PDF or PNG designs and use them as invoice templates. Map your data fields onto your design, and every invoice looks like something you created, not something you downloaded. The AI feature generates structured line items from a plain-language description of your work -- describe the project and it creates professional line items automatically.
For designers and creative studios, this is not cosmetic. Your invoice is a brand touchpoint. It should look like your work.
Wave Has Real Accounting. That Matters for Some People.
Wave includes double-entry bookkeeping, receipt scanning, bank connections, and financial reports. If you are a solo freelancer doing your own books and want everything in one free tool, Wave delivers genuine value there.
But if you use a separate accounting tool, hand your books to an accountant, or simply do not need accounting software, Wave's accounting features are just extra interface standing between you and the invoice you are trying to send.
When to Choose Each
Choose inv.so if you care about invoice design, want AI-powered creation, and send enough volume that Wave's 2.9% payment fees outweigh a small monthly subscription. Best for designers, freelancers, and studios who want a clean, professional tool.
Choose Wave if you need free accounting software and your invoice volume is low enough that payment processing fees stay manageable. Best for early-stage freelancers watching every dollar who also need basic bookkeeping.
The Bottom Line
Wave is a good deal if you need accounting and rarely accept online payments. But "free" stops being free the moment clients pay by card, and the ad-supported experience shows. inv.so costs a few dollars a month and gives you a faster, cleaner, design-first invoicing tool with lower payment fees on Pro. For most creatives, that is the better deal.