Cofactu vs Billin — no zombie invoices, with human chat.
Billin has a documented pattern on Trustpilot: TicketBAI invoices stay in draft without being sent to the Basque regional tax authority, and since the TeamSystem acquisition they've dropped human chat. Comparison with real quotes (May 2026).
What Billin users say in 2026
Quotes and recurring patterns from Trustpilot, Capterra, and the App Store. We don't edit or cherry-pick the harshest ones — these are the most repeated complaints in verified reviews, with a link to the source.
"The software leaves hundreds of sales in draft without sending them to the Tax Agency, and when you ask the human team for help they don't offer solutions."
Trustpilot ES · Billin
"The platform has gotten worse over the last few years. After the interface change you need a lot of patience, it's one glitch after another. I spent half an hour trying to issue an invoice that's impossible to get out of draft."
Trustpilot ES · Billin
"They removed the ability to contact customer support via chat, so much for personalized support."
Trustpilot ES · Billin (post-TeamSystem)
"They make it very hard to leave — you can't properly export contacts or invoices to take them to another provider."
Trustpilot ES · Billin
Point-by-point comparison
16 features compared. Every relevant gap includes a direct quote or documented pattern from Trustpilot/Capterra as evidence.
| Feature | Cofactu | Billin |
|---|---|---|
| Tax compliance | ||
| Proactive alert if an invoice stays >24h in draft Trustpilot: "the software leaves hundreds of sales in draft without sending them to the Tax Agency" | Yes — email + in-app + dashboard banner | No — zombie invoices documented on Trustpilot |
| Automatic TicketBAI refund/corrective invoice (Shopify+) | Yes — automatic on receiving the refund webhook | Only sends the sale, not the refund (you overpay VAT without knowing it) |
| AEAT transparency page per invoice | Yes — XML + response + log + 1-click resend | No |
| Human-readable AEAT error catalog + proactive email | Yes — code + reason + how to fix it | Standard |
| Support | ||
| Human chat on the base plan Trustpilot: "they removed the ability to contact customer support via chat" | Small business/Accounting firm plan with <2h SLA | Removed after the TeamSystem acquisition (2023) |
| Phone support | Small business/Accounting firm plan at no extra cost | Only on the Unlimited plan, €20/month |
| Pricing | ||
| Active self-employed base plan Banktrack: with 6 clients — a trivial amount — you're forced up to Pro at €12.50/month (+89%) | €9/month (50 invoices/month, unlimited clients) | €6.60/month Basic — MISLEADING (5 clients, 10 products, 5 OCR) |
| Frozen-price commitment | 24 months in writing (/precios-justos) | No public commitment |
| Bank connection + automatic reconciliation Capterra: "you miss being able to manage taxes, treasury, or work better with projects" | Yes — reconciliation + multi-currency | Doesn't have it (recurring Capterra complaint) |
| Functionality | ||
| Treasury + PGC accounting entries | Yes — general ledger + balance sheets + CSV/ERP export | No — Billin positions itself as pure invoicing |
| Multi-currency (USD, GBP, etc.) Trustpilot: "suddenly you can no longer make invoices in dollars" | 18 currencies with exchange rate per invoice | Dropped USD in an update without notice |
| E-commerce integrations | Roadmap: WooCommerce + PrestaShop + Shopify | Only native Shopify (gated on Unlimited €20) |
| REST API + Webhooks + SDK | Included on all plans + npm SDK + OpenAPI | API in open beta, by request only |
| Multi-tenant accounting firms | ||
| Native parent-child hierarchy with unified view | Yes — switch between clients in 1 click | Free plan for accountants but no real unified view |
| Customer data | ||
| Full ZIP export with no lock-in Trustpilot: "they make it very hard to leave, you can't properly export contacts or invoices" | 1 click — CSV + PDF + XML + audit log | Documented lock-in |
| Billin importer | Yes — from exported CSV | — |
Real cost for your usage, not the "starting from" price
Billin's base price sounds good until you add extras and add-ons — the standalone modules you need to run as a real business. Typical scenarios:
Self-employed with 6 active clients + 30 invoices/month
Cofactu
€9/month
No extras. No surprises.
Billin
Base: €6.60/month Basic (doesn't work — capped at 5 clients)
- + Forced upgrade to Pro: €12.50/month
Total: ≈ €12.50/month (no SEPA, no Shopify)
Small business with Shopify + SEPA batches + multi-currency
Cofactu
€19/month
No extras. No surprises.
Billin
Base: €20/month Unlimited
- + USD/GBP not supported (multi-currency dropped)
- + No treasury or accounting entries
Total: €20/month but functionally limited
Accounting firm with 80 clients
Cofactu
€49/month (unlimited clients + native multi-tenant)
No extras. No surprises.
Billin
Base: Free accountant plan
- + No unified multi-client view — client by client
- + Each client pays for their own Billin plan
Total: Free for you, €6.60-20/client for them
Billin prices estimated from public rates, May 2026. If they've changed, email us at hola@cofactu.com and we'll update it.
Assisted migration from Billin
Trustpilot reviews say Billin adds friction on the way out. You won't start from scratch — we help you:
- Official CSV importer — export clients and invoices from the Billin panel and upload them at /migrar/desde-billin.
- Special Shopify case — we recover the refunds Billin never sent and generate the missing corrective invoices.
- 30 days free + first month free if you come with >500 historical invoices.
- No-lock-out guarantee: whenever you want to leave, export everything as a ZIP in 1 click. No chat, no waiting. It's in writing at /seguridad.
Frequently asked questions
What exactly are these zombie invoices?
The Shopify refund issue sounds serious, right?
Why do you insist so much on human chat?
Is migrating from Billin complicated?
30-day trial, no card required
If you'd rather stay with Billin afterward, you take your data with you in a ZIP. No lock-in, no "let us call you to talk you out of it."