From quote to VAT return, in one place.
A calm, dependable back-office app for small and medium businesses that sell across borders, approve supplier invoices before they are paid, and want a VAT return that follows from the books.
No sign-up needed. Sample data, nothing to install.
| Invoice | Client | Date | VAT Excl. | Total | E-invoice | Payment |
|---|---|---|---|---|---|---|
| INV-2026-0891 | Nordic Logistics ApS DK99482103 • Intra-EU | 08 Oct 2026 | €12,450.00 | €12,450.00 | PDF + UBL | Paid |
| INV-2026-0892 | Veldhoven Dynamics B.V. NL849302198B01 • Domestic 21% | 08 Oct 2026 | €3,800.00 | €4,598.00 | PDF + UBL | Due in 14 days |
| INV-2026-0893 | Helvetia Precision AG CHE-102.341.982 • Non-EU Export | 07 Oct 2026 | €8,900.00 | €8,900.00 | PDF + UBL | Due in 29 days |
| INV-2026-0894 | Atelier Lyon SAS FR82910394012 • Intra-EU | 06 Oct 2026 | €5,620.00 | €5,620.00 | PDF + UBL | Paid |
| INV-2026-0895 | Bravo Cloud Solutions Ltd GB382910482 • Reverse Charge | 05 Oct 2026 | €2,100.00 | €2,100.00 | Draft | Due in 7 days |
Built on open standards, not on a closed format
One continuous chain from customer quote to VAT return.
No copying data between three separate tools. Each step feeds the next, and every figure can be traced back to its document.
Quote
Build a quote from your product list with clear lines, VAT and payment terms, in your currency or your customer's. The customer accepts and signs it online.
Invoice
Turn the accepted quote into a sales invoice. Every invoice comes as a readable PDF and as a structured UBL e-invoice.
Books
Every sales and purchase invoice is synced to your books automatically: debtors, creditors, revenue, costs and VAT, always in balance.
VAT Return
Domestic, intra-EU and reverse-charge transactions land in the right boxes of the return for your jurisdiction. Check the figures and file them with your tax office.
Built for the real jobs of running a company.
No enterprise bloat and no toy accounting. Every part does one job and does it properly.
Sales Invoicing & Quotations
Job: Turn an agreed quote into an invoice without retyping anything.
Write quotes from your own product list, in euros or another currency. Your customer accepts and signs online, the right VAT treatment is chosen for domestic, EU and non-EU customers, and the signed quote becomes an invoice with one click. Credit notes and payment reminders are part of it.
Purchase Invoice Approval
Job: Protect company cashflow from duplicate bills and unapproved spending.
Suppliers mail their invoices to one mailbox, or you upload a scan or photo. The app reads supplier, amount, VAT and IBAN from the document and proposes the booking. A colleague signs off, and the invoice is booked in the ledger automatically. Change the amount or the IBAN afterwards and the signatures are void.
Double-Entry General Ledger
Job: Keep books that any accountant can follow and verify.
Sales and purchase invoices are synced to the books automatically, so nobody types them over. Every movement has a debit and a credit. Entries are never edited, only reversed, and closed periods are locked. Work with your own chart of accounts: add, rename and regroup accounts to match the one your accountant uses. Profit and loss, balance sheet, trial balance and the card of every account are there at any moment.
E-invoices in UBL
Job: Give customers an invoice their software can read without typing.
Every sales invoice is also available as a UBL 2.1 file in the Peppol BIS Billing 3.0 profile, the format behind the European e-invoicing rules. Download it next to the PDF or send it along with the invoice.
VAT Return, EC Sales List & Audit File
Job: Have the VAT return ready without three days of spreadsheets.
Sales and purchases fill the boxes of your VAT return per month, quarter or year. You set the return up for your own jurisdiction: your rates, your VAT codes and the boxes your tax office uses. The EC sales list comes with it, and a full XML audit file is ready for your accountant or the tax office.
Cashflow: History & Forecast
Job: See where the money went and where the balance is heading.
Look back: every bank transaction sorted into categories by your own rules, per month and per year. Look ahead: a forecast of your balance from open invoices, bills to pay, recurring costs and renewals. Bank data comes in by statement upload, Wise sync or an open banking feed.
User Rights per Role
Job: Let everyone work in the same system and see only what they should.
Give each colleague a role: sales writes quotes and invoices, staff hand in expense claims, finance sees the books and the bank. Sensitive parts such as cashflow and payment approval open only for the people you choose. Two-step login (2FA) can be switched on as an option.
Sales Reports & Metrics
Job: See how sales are going without building a spreadsheet first.
Revenue per month, per salesperson, per product and per country, straight from the invoices. Follow open quotes, what has been invoiced and what is still unpaid, and compare with last year.
Expense Claims in the App
Job: Pay back what people spent without chasing receipts.
Staff hand in their own expense claims from a phone or laptop: a photo of the receipt, the amount and what it was for. A manager approves, the claim is paid out and it lands in the books with the right VAT.
Service Agreements & Renewals
Job: Never forget to invoice a contract that renews.
Sell service agreements next to your products and keep every contract with its start date, term and price. See what comes up for renewal and turn it into the next invoice in time.
Ready for European e-invoicing rules and tax audits.
Country by country, Europe is making structured e-invoices mandatory between businesses. A PDF by email will no longer be enough. erpsoftware.app produces the structured invoice from day one.
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Invoices in the Peppol format
Each invoice is available as UBL 2.1 in the Peppol BIS Billing 3.0 profile. Your customer can load it straight into their own accounting software.
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Checked against EN 16931
The e-invoice output is tested against the official UBL schema and the EN 16931 business rules, for domestic, intra-EU, reverse-charge and export invoices.
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XML audit file on request
When your accountant or the tax office asks for the books, download one XML audit file (XAF 3.2) with the chart of accounts, all journals, and your customers and suppliers.
No fine print. No price per seat.
Many back-office tools charge extra for every colleague who needs to approve an invoice or check a quote. We charge a flat price per company.
Flat price per company
Invite sales, project managers and directors. The price does not jump because someone signed off an expense claim.
No lock-in
Your records leave in open formats: PDF, UBL, CSV and the XML audit file that other accounting software can read.
Full export
Export the journal, trial balance, VAT return and the complete audit file yourself, at any time, without asking support.
Self-hosting possible
Need the data inside your own network? The same software can run on your own server. Ask us about it.
Accountant seat included
Give your external bookkeeper or accountant a login of their own. It does not count towards your users.
Transparent plans. Flat per company.
Both plans include quotes, invoices, approvals, books and the VAT return. Pro adds cashflow, bank integration, invoice scanning and unlimited users.
Core
For small teams: quotes, invoices, approvals, books and VAT.
• Flat price per company (up to 5 users)
- ✓ Quotes with online signature, sales invoices
- ✓ Purchase invoice approval and expense claims
- ✓ Double-entry books with your own chart of accounts
- ✓ VAT return, EC sales list and audit file
- ✓ UBL e-invoice with every invoice
- ✓ Free login for your accountant
Pro
For companies that also want cashflow, bank integration, invoice scanning and everyone in the system.
• Flat price per company (unlimited users)
- ✓ Everything in Core, plus:
- ✓ Unlimited users
- ✓ Cashflow history and forecast
- ✓ Integration with your bank and Wise
- ✓ Purchase invoices read by OCR, up to 500 a month
- ✓ Rights set per user and per module
- ✓ Help with setup and your chart of accounts
- ✓ Priority support
Frequently Asked Questions
Plain answers about your data, self-hosting and compliance.
How does self-hosting compare to the cloud version?
Both run the same software with the same screens. In the cloud version we take care of hosting, backups and updates, and your data is stored in the EU under EU law.
Running it on your own server is possible on request: the same software, inside your own network, with a licence per company.
Do we pay extra for our accountant or bookkeeper?
No. Your accountant gets a login of their own that does not count towards your users. They can see the journal and the trial balance and download the VAT return and the XML audit file.
What is an e-invoice, and what about Peppol?
An e-invoice is a structured file that accounting software can read without anyone typing it over. More and more European countries require it between businesses.
erpsoftware.app creates every invoice as UBL 2.1 in the Peppol BIS Billing 3.0 profile, next to the PDF. You download that file or send it along with the invoice, and your customer loads it into their own software.
Which countries and currencies are supported?
The VAT return is set up per jurisdiction: you define your rates, your VAT codes and the boxes of your own return, so it fits the tax office you report to. Invoices handle domestic VAT, intra-EU supplies, reverse charge and export.
You can quote and invoice in other currencies. The books are kept in your own currency, with the exchange rate recorded on each document.
Can we start in the middle of a year?
Yes. You choose the date your books start, enter the opening balances and import your customers, suppliers and products from a file. Your chart of accounts can be adjusted to the one your accountant uses, and at the end of the year you close the year and carry the balances forward.
Does it include stock and manufacturing?
No. erpsoftware.app is the back office: sales, purchases, books, VAT and cashflow. It does not manage stock levels, warehouses or production planning.
Can we take all our data with us if we leave?
Yes. You can export the journal, the trial balance, the VAT figures and a complete XML audit file at any time, and all invoices stay available as PDF and UBL. There is no waiting period and no fee.
Ready for a calm back office?
Try the whole program in the live demo, filled with sample quotes, invoices, books and a VAT return. No sign-up, no email, no credit card.