01Continuity register · 3 checks No history lost Invoices with their original numbering and date, clients with their full tax details, and, if you're coming from Contasol, the entire accounting (chart of accounts, journal, balances). Cofactu's VeriFactu chain starts clean with your first new invoice. 
Migrate from Factusol to Cofactu
without losing a single invoice
Factusol stopped being free in 2021, and today phone support alone costs €46.50/month in the Cloud plan. If you have to pay anyway to comply with VeriFactu, compare what those euros actually get you: bring over clients, products, and invoices via Excel export, and your Contasol accounting with our native importer (the same engine we use for A3 and Sage).
No card · Reviewable import · History kept apart from new operations
| 01 · Source | Factusol | CSV clients · tax details · XLS invoices · history · CSV products · catalogue and VAT |
|---|---|---|
| 02 · Review | Control gate | 1 Columns recognised · 2 Duplicates set aside · 3 Series confirmed |
| 03 · Destination | Cofactu | History available · New chain prepared · Status: Ready to review |
Source copy kept · Import with preview · Review before issuing
What shouldn't be lost Moving the history doesn't mean
Moving the history doesn't mean
breaking its context.
The move keeps what you need to consult the past and separates new invoices so you can review before continuing.
01Continuity register · 3 checks No history lost Invoices with their original numbering and date, clients with their full tax details, and, if you're coming from Contasol, the entire accounting (chart of accounts, journal, balances). Cofactu's VeriFactu chain starts clean with your first new invoice. 
02Continuity register · 3 checks Zero invoicing downtime You can keep invoicing in Factusol while you try Cofactu in parallel during the 30-day free trial. When you're ready, cancel your DELSOL subscription — no cutover, no forced transition period. 
03Continuity register · 3 checks No lock-in If you ever want to leave, you can export data per module (clients, invoices, expenses, journal entries, signed PDF + XML) and request a complete account copy. Transparency runs both ways. One documented path, with a review before importing.
Cofactu does not import through the Factusol API. The guide starts from the exported file and a prior review of its contents.
Documented route
Export from Factusol
- 2 min · File
Export from Factusol
Factusol → Invoicing → reports/listings → export to Excel. Repeat for clients and items. Factusol exports to Excel from any listing (Office/Excel button on the ribbon). You need 3 files: issued invoices, clients, and items. If you use Contasol for accounting, also export the chart of accounts and the journal — Cofactu imports them natively.
- 1 min · File
Upload the files to Cofactu
Create your free account and go to Invoices → Import → From another program → select Factusol. The parser detects the DELSOL column format. Editable preview before commit: you see exactly which invoices, clients, and products are about to come in, and you can map any custom column.
- 2-3 min · File
Import your Contasol accounting (optional)
Accounting → Import → Contasol. Chart of accounts, journal entries, and balances come in directly. It's the same accounting importer we use for A3 and Sage: it respects your journal entry numbering and marks them as imported (they don't enter Cofactu's immutability chain, which starts with your first new entry).
- 1 min · File
Confirm + go
Review the preview with N invoices + M clients and hit Import. Done. Historical invoices keep their Factusol numbering and come in as searchable history. Your series picks up where you left off — Cofactu's VeriFactu chain starts clean with the first new invoice, as required by law when switching invoicing software (SIF).
Scroll
The switch ends when the new system
can already do the work.
These are the capabilities that stay connected after bringing the history over from Factusol.
| 01 | Everything in one product | In the DELSOL ecosystem, invoicing is Factusol, accounting is Contasol, payroll is Nominasol, and the till is TPVSol — each with its own subscription. In Cofactu, invoicing, accounting through to the balance sheet, and bank reconciliation all live in the same plan (SME); payroll and POS are added as add-ons. |
|---|---|---|
| 02 | Any operating system | Factusol is desktop Windows software; its Cloud version exists but is a later add-on. Cofactu is a web app from day one: the full product works the same on Mac, Windows, Linux, or iPad, and the PWA lets you invoice and scan receipts from your phone. |
| 03 | Human support with no paid tiers | In Factusol Cloud, the support channel sets the price: digital €19.50, email €30.50, phone €46.50/month. In Cofactu, human support by WhatsApp and email during business hours is included in every plan — we don't charge you for us helping you. |
| 04 | VeriFactu with a safety net | We both comply with VeriFactu — the difference is the layer on top: an AEAT error catalog in plain language, 1-click detection and repair of a broken chain (4171), proactive email if AEAT rejects a submission, and T-90/T-30/T-7 alerts for certificates and power of attorney. |
History available to consult · New operations active
Clean chain Your first new invoice opens
Your first new invoice opens
a verifiable chain.
Keep the originals and the supporting documents of the invoices issued from Factusol. Don't issue them again as if they were new operations. Review the series and the configuration of new invoices in Cofactu separately.
- History imported and available to consult
- New records chained and submitted
- Detection of breaks in the chain
| History | Factusol | Keeps its originals |
|---|---|---|
| New genesis | ||
| First new invoice | F-2026-00001 | SHA-256 hash · chained |
| Next record | F-2026-00002 | Previous hash linked |
Illustrative example · Check series and date
The operations that carry on The history arrives. The next tax forms
The history arrives. The next tax forms
are born from your new data.
Cofactu aggregates new invoicing, expenses and withholdings to prepare the supported tax forms from the same system.
Before migrating from Factusol.
Answers on timing, history, numbering and continuity before you confirm the move.
Ask about my case →Are my invoices issued from Factusol re-submitted to AEAT?
No. Imported invoices come in as searchable history — they aren't re-submitted or duplicated. Cofactu's VeriFactu chain starts with your first NEW invoice, which is exactly what the law requires when you switch invoicing software.
What exactly does the Contasol importer bring in?
Chart of accounts (with your custom accounts), journal entries, and opening balances. It's the same accounting import engine we use for A3 and Sage. Imported entries are marked as historical; Cofactu's immutability chain starts with your first new entry.
I use the old free version of Factusol (pre-2021). Can I migrate?
Yes — the Excel export works the same in older desktop versions. In fact it's the most common case: VeriFactu forces an upgrade, the free version no longer exists, and it's the natural moment to compare your options before paying up.
What happens to my items, price lists, and offers from Factusol?
Items and base prices are imported in full. Factusol's multiple price-list structures and volume offers don't have a 1:1 equivalent — the importer brings in the main price, and the rest ends up in a review CSV for you to decide how to map it.
How long does it take with 1,000 invoices and 5 years of accounting?
The invoicing Excel file processes in 2-3 minutes with a preview beforehand. The Contasol import depends on the size of the journal: a typical fiscal year comes in within 1-2 minutes per year. Everything with a preview before commit.
What about the POS? I'm coming from TPVSol.
Cofactu's POS (till, F3 tickets, Z closing, per-warehouse stock) is an add-on to the SME plan (€39/month) or higher: €19/month per location; each extra till is +€10/month. You set up your location and till in minutes. TPVSol's ticket history isn't imported as tickets, but its aggregated sales do come in through the invoice Excel file.
Start with a copy, not a surrender Bring a sample and check
Bring a sample and check
before you switch.
Create your account, import the first data from Factusol and check the result without cancelling your current tool yet.
