SlowBooks Pro vs Zoho Books Free: what do the caps really cost you?
Last updated July 2026 · Written by the SlowBooks Pro team; we'll tell you honestly when Zoho is the better pick
Feature comparison
| Feature | SlowBooks Pro 2026 | Zoho Books (free plan) |
|---|---|---|
| Price | Free - every feature, forever | Free only while revenue < $50K/yr |
| Invoice limit | Unlimited | 1,000 per year |
| Sales receipts (POS-style) | One screen records the sale + its payment; imports QuickBooks receipt history (Desktop IIF + QBO) | Sales receipts included on the free plan |
| Revenue eligibility cap | None | $50,000/year, then you must upgrade |
| Where your data lives | Your computer (local files you can copy) | Zoho's cloud servers |
| Users | Server Edition multi-user - roles (admin / bookkeeper / read-only) + audit trail, free; plus employee self-service portal | 1 user + 1 accountant |
| Double-entry accounting | Yes - journals, closing dates, audit log | Yes |
| Payroll | Included - W-2/W-3/940/941, PTO, garnishments, employee portal | Separate paid product (regional) |
| Inventory | Perpetual inventory, weighted-average cost, auto COGS | Paid plans only |
| Bank connections | SimpleFIN bank feeds (credential you hold) + manual OFX/QFX import | Bank feeds included |
| Customer portal | Employee portal (payslips, W-4, time off); no customer portal | Customer portal included |
| Reports | P&L, Balance Sheet, aging, GL, cash forecast, drill-down, saved reports | 50+ reports |
| AI features | Optional bring-your-own-key (8 providers incl. self-hosted and any OpenAI-compatible endpoint) | Not on the free plan |
| AI-agent ready (API access) | Local REST API (499 operations) with scoped, role-bound tokens + guided setup for Claude Code, Codex, Gemini and Grok CLI | Cloud REST API, 1,000 calls/day on free |
| QuickBooks migration | Direct IIF import from QuickBooks Desktop + QBO sync | Import tools available |
| Works offline | Completely | Requires internet |
| Source code | Source-available on GitHub | Proprietary |
Where Zoho Books is the better choice
If you're under the caps and want a slick cloud experience, Zoho's free plan is arguably the most generous hosted free tier on the market: a customer portal, mileage tracking, and mobile apps, things a local-first desktop app either does manually or doesn't do. If your business lives inside the wider Zoho suite (CRM, Mail, Inventory), staying in that ecosystem makes sense too.
Where SlowBooks Pro is the better choice
The caps are the catch. 1,000 invoices a year is under 20 a week, and a busy trade or small shop crosses that. And the $50K revenue ceiling means the free plan is, by design, a temporary on-ramp to paid plans. SlowBooks Pro has no on-ramp because there's nothing to ramp onto: payroll, inventory, analytics, and unlimited everything are simply included.
There's also the ownership question. Zoho hosts your books; export is on their terms. SlowBooks Pro keeps each company as a single file on your own disk, so back it up like any other file, and the software runs forever whether or not the project (or the internet) is reachable.
The bottom line
Zoho Books Free is an excellent trial-sized cloud ledger for micro-businesses that expect to graduate to a subscription. SlowBooks Pro is a permanent home for your books - full-featured, uncapped, and local, for anyone who'd rather own their accounting than rent it.
Try SlowBooks Pro free
No caps on invoices or revenue, and no subscription. Signed Windows and macOS installers, or Docker.
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