KipBill vs Billin: The Complete Comparison for Freelancers & Small Business (2026)

Billin is one of the most popular invoicing platforms in Spain, with over 180,000 users. Its pitch is straightforward: simple invoicing for freelancers and small businesses, no ERP complexity. It is VeriFactu compliant, supports TicketBAI and FACe, and has carved out a solid position in the Spanish market.

But if you are looking for an invoicing platform that also includes multi-user with roles, full accounting reports, withholding tax support, online payments via Stripe, recurring invoices, a client portal, REST API, an AI assistant with 45+ tools, line-by-line receipt scanning, 12 languages, and 30+ currencies — all starting at €0/month — then it is worth comparing Billin with KipBill in detail.

Pricing: Free vs €6.6/month Minimum

Billin offers a free plan, but it is extremely limited — very few invoices per month, no quotes, no expense tracking.

Billin's pricing (annual billing):

KipBill's pricing:

KipBill Pro (€5/month) costs less than half of Billin Pro (€12.5/month) — and offers significantly more features. For multi-company, Billin charges €83.3/month. KipBill supports multiple businesses per account on the Pro plan.

Full Feature Comparison: KipBill vs Billin

Multi-User with Roles: Your Accountant Can Access

KipBill supports up to 100 users with three permission levels:

• Admin: Full control over everything
• Editor: Can create and edit invoices, quotes, expenses, and clients
• Viewer: Read-only — perfect for your accountant, tax advisor, or bookkeeper

Your accountant can access KipBill directly, download P&L and tax reports, and review your financial situation in real time. No more emailing spreadsheets.

Billin only offers multi-user on its Plus plan (€83.3/month). KipBill Pro at €5/month includes it as standard.

Financial Reports

KipBill includes four accounting reports:

1. Profit & Loss (P&L) — Revenue vs expenses with margins and trends
2. Tax report — Breakdown by tax rate, ideal for quarterly VAT returns
3. Income report — Invoicing by client, period, and status
4. Aging report — Overdue invoices with days past due

Billin helps prepare the Modelo 303 but does not offer P&L or aging reports. KipBill gives you a more complete financial picture.

Online Payments with Stripe Connect

KipBill integrates Stripe Connect (Pro plan, €5/month):

• Payment button directly on each invoice
• Payment links shareable with clients
• Partial payments recorded automatically
• Multiple methods — bank transfer, card, PayPal, cash
• Bank details — account holder, IBAN, and SWIFT on invoices

Billin does not offer integrated online payments. Your clients must pay manually by bank transfer.

Client Portal

KipBill offers a client portal where clients can view invoices, download PDFs, pay online, and accept quotes. The portal adapts to each client's language and currency. You can use your custom domain.

Billin does not offer a client portal.

AI Assistant: 45+ Tools

KipBill includes an AI assistant with 45+ tools:

• Voice invoice creation in 12 languages
• Chat-based quotes, credit notes, and expenses
• Receipt scanning with per-item tax detection
• File upload (Excel, CSV) with AI interpretation
• Business queries — "How much did I invoice this quarter?"

Billin has no AI functionality whatsoever.

Recurring Invoices and Auto-Reminders

KipBill supports recurring invoices (weekly, bi-weekly, monthly, quarterly, yearly) and automatic overdue reminders from Starter (€3/month).

Billin offers recurring invoices on its Pro plan (€12.5/month) — four times more expensive.

Product Library, Inventory, and Vendors

KipBill includes a product/service library with pricing, tax rates, and stock tracking, plus vendor management and client groups with shared defaults.

REST API and Advanced Customization

KipBill Pro includes a complete REST API, custom SMTP, custom domain for the client portal, email open tracking, and custom number prefixes. Billin offers none of these.

What Billin Does Better

Let us be fair:

• VeriFactu already implemented — full compliance with Spain's electronic invoicing regulations
• TicketBAI — complete integration for the Basque Country and Navarra
• FACe — electronic invoicing to Spanish public administrations
• Kit Digital subsidized — free or discounted through a Spanish government program
• 180,000+ users — established platform with years of experience
• Extreme simplicity — clean, focused interface

If you operate exclusively in Spain, invoice only in euros, and your absolute priority is VeriFactu and TicketBAI compliance right now — Billin is a proven choice.

Who Should Choose What

Choose Billin if:

• You only invoice in Spain, in Spanish, in euros
• You need VeriFactu and TicketBAI today
• You want ultra-simple software with no advanced features
• You qualify for Kit Digital

Choose KipBill if:

• You want unlimited invoices and quotes on the free plan with withholding tax
• You need multi-user with roles (your accountant as viewer)
• You want P&L, tax, and income reports
• You want AI-powered invoicing (45+ tools, voice and chat)
• You need online payments with Stripe Connect
• You want a professional client portal
• You need recurring invoices and auto-reminders
• You work internationally (12 languages, 30+ currencies)
• You need a REST API
• You want e-signatures, inventory management, and vendor tracking

The Bottom Line

Billin is a solid invoicing tool for Spanish freelancers who want simplicity and immediate tax compliance.

But KipBill is a complete invoicing and financial management platform that offers far more for less. Unlimited free invoices with IRPF, multi-user with roles, P&L and tax reports, Stripe payments, recurring invoices, client portal, REST API, AI receipt scanning, 45+ AI tools, e-signatures, 25 templates, 12 languages, 30+ currencies. KipBill Pro (€5/month) costs less than half of Billin Pro (€12.5/month) — with triple the features.

Try KipBill free — no credit card required →