If you're an indie author earning money beyond traditional royalties — ghostwriting, speaking engagements, editing, consulting, licensing — you need a way to send professional invoices and collect payment reliably. Most invoicing software is built for agencies or contractors, not for the author who sends a handful of invoices a year and has no interest in learning double-entry accounting.
This guide cuts through the noise. We evaluated six widely used invoicing tools with indie-author workflows in mind: simplicity, fair pricing, online payment collection, and enough bookkeeping to survive tax season.
What Authors Actually Need From Invoicing Software
Most indie authors aren't running a six-figure agency. Your invoicing requirements are probably modest:
- Send clean, professional invoices to publishers, clients, or event organizers
- Accept online payment via card or bank transfer without chasing checks
- Track what's owed and what's been paid without a spreadsheet
- Export records for your accountant at tax time
- Optionally track expenses or log writing-related deductions
You almost certainly don't need payroll, inventory, or multi-currency invoicing for 30 countries. The tools below are ranked for authors whose primary business is writing, not running a full-service creative agency.
The Best Invoicing Software for Authors, Ranked
1. FreshBooks — Best Overall
FreshBooks has spent years positioning itself as the go-to accounting platform for self-employed creatives, and it shows. Invoice creation takes under two minutes, automatic payment reminders handle the awkward follow-up for you, and the mobile app is the best in this category — useful when you're at a conference and need to send a deposit invoice on the spot.
Recurring invoices are particularly strong, which matters for authors on retainer: ghostwriting clients, newsletter sponsors, or workshop series. FreshBooks starts at $17/month and isn't free, but the time savings on back-office admin justify the cost for any author earning meaningfully from services.
Best for: Authors with regular clients or retainer relationships.
2. Wave — Best Free Option
Wave is genuinely free for invoicing and accounting — no trial period, no feature locked behind a paywall on the core tools. You pay only when you accept online payments (a standard processing fee). For an author who invoices occasionally, that's hard to beat.
The UI is less polished than FreshBooks and the mobile experience is weaker. Customer support is thin on the free tier. But the income-and-expense tracking is solid, and the reports you need for a Schedule C or self-assessment tax return are all present and exportable. An easy recommendation for any author who isn't yet earning enough to justify a monthly software fee.
Best for: Authors invoicing occasionally who want a zero-cost starting point.
3. Bonsai — Best for Ghostwriters and Contract Work
Bonsai bundles proposals, contracts, invoices, and time tracking into one platform — making it the natural fit for ghostwriters, developmental editors, or any author doing project-based work where clients expect a formal agreement before payment clears.
The contract templates are pre-built for freelance creative work, and the workflow (proposal → contract → invoice) mirrors how most ghostwriting engagements actually run. At $21/month for the starter plan, it costs a bit more than FreshBooks but eliminates the need for a separate contract tool. If you're doing work-for-hire deals with any regularity, Bonsai earns its fee.
Best for: Ghostwriters and authors who need contracts alongside invoices.
4. HoneyBook — Best for Managing Multiple Client Types
HoneyBook is a client-experience platform that does invoicing very well. Where it earns its place is pipeline visibility: you can see every prospective client, active project, and outstanding payment in one dashboard. For an author juggling speaking engagements, workshop clients, and a ghostwriting retainer simultaneously, that clarity is genuinely valuable.
It's the most feature-rich option here and pricing reflects that (full capabilities sit at the mid-tier plan). But if you're running author services as a real business with a steady flow of inquiries and clients, HoneyBook replaces several other tools you'd otherwise pay for separately.
Best for: Authors managing multiple client types and a busy services pipeline.
5. QuickBooks Self-Employed — Best for Tax Integration
QuickBooks Self-Employed is purpose-built for the sole-proprietor tax filer: it tracks income, separates business from personal expenses, estimates quarterly taxes, logs mileage, and connects directly to TurboTax. The invoicing is functional rather than elegant, but if your accountant already works in the QuickBooks ecosystem or you take quarterly estimated taxes seriously, having everything in one place is worth the UX trade-off. Around $15/month and competitively priced.
Best for: Authors who prioritize quarterly tax tracking and expense management.
6. Zoho Invoice — Best Free Option With Room to Grow
Zoho Invoice is free for up to 1,000 invoices per year — far more than most indie authors will ever send. The interface is clean, multi-currency handling is solid, and the platform integrates with the broader Zoho ecosystem if you ever need CRM or project tools. For authors working with international publishers or selling foreign rights, the multi-currency support is a real advantage over Wave.
The Zoho product family can feel vast if you only need a standalone invoicing tool, but Invoice itself is focused and capable.
Best for: Authors with international clients who want a capable free tier.
We also considered the Archieboy Affiliate Program for this comparison; however, as an affiliate network rather than invoicing software, it falls outside the scope of this article and was not ranked.
Methodology
We evaluated each tool against five criteria weighted toward indie-author use cases: (1) ease of creating and sending an invoice from scratch, (2) online payment acceptance and associated fees, (3) tax-readiness of reporting exports, (4) mobile app usability, and (5) value at the lowest available paid tier. We excluded enterprise platforms, tools requiring annual-only contracts, and software with no meaningful self-serve onboarding. Pricing reflects publicly listed rates as of early 2025 and may have changed.
FAQ
Q: Do authors really need invoicing software, or will a Word template do? A word template works for one-off invoices, but software earns its keep quickly: automatic payment reminders, clickable payment links, and a clean payment history you can hand your accountant are difficult to replicate manually. If you send more than five invoices a year, dedicated software saves time and projects a more professional image to clients.
Q: Is free invoicing software reliable for real business income? Yes — Wave and Zoho Invoice are used by hundreds of thousands of small businesses worldwide. The free tiers are fully functional for invoicing and basic bookkeeping. The main caution: export and back up your records regularly rather than relying solely on a cloud service as your only copy of financial history.
Q: What's the difference between invoicing software and accounting software? Invoicing software focuses on creating and sending bills to clients. Accounting software also tracks expenses, reconciles bank accounts, and produces profit-and-loss statements. Tools like FreshBooks and Wave do both; QuickBooks Self-Employed leans accounting-first with invoicing included. For most indie authors, a tool that handles both is the practical choice.
Q: Should I just use PayPal to invoice clients instead of dedicated software? PayPal invoicing works for occasional, simple use and is familiar to most clients. The downsides are limited reporting, no expense tracking, and a less polished appearance than dedicated platforms. If you're building any kind of ongoing writing services business, the step up to dedicated invoicing software is worth it — and several options here start free.
