Dashboard
KPI counters, recent invoices, the current VAT return and open items — plus a guided first-run checklist.
The complete solution
One platform.Every business process.
Start with invoicing and add accounting, projects, purchasing, documents and banking as your business grows. One system, one login, one price.
- Hosted in Germany
- GDPR compliant
- Cancel monthly
39,90 € per month, net, plus VAT
Monthly · cancel any time · 30-day free trial
Standards it satisfies
EN 16931ZUGFeRD 2.xXRechnung 3.0SKR03 / SKR04DATEVPDF/A-3
What's included
Everything your business runs on
Everything TWT One includes, grouped the way you will find it again after you sign in.
Dashboard
Sales
Quotations
Quotation, order confirmation and delivery note in one chain — each turns into the next with one click, each on its own number circle.
Invoices
Draft to finalized, line items with per-line VAT and UN/ECE units, signature capture, QR code, duplicate and bulk actions.
Recurring
The same invoice, every month, written once. Weekly to yearly, ending on a date or after a count. Either as a draft for approval, or issued and sent automatically — with the number sequence staying gapless.
E-Invoice
Meet the legal requirements for e-invoicing in Germany with a single click: generate, convert, extract and validate ZUGFeRD and XRechnung against EN 16931.
Customers
Buyer master data including VAT ID, flowing straight into the e-invoice as BT-48.
Payment Terms
Agree your terms once and choose them on every document. Several discount levels — 3 % within 7 days, 2 % within 14, net 30 — with the deadlines and the amount to pay worked out for you.
Reminders
Up to three reminder stages with their own deadlines and fees. Default interest under § 288 BGB — nine points over the base rate against a business, five against a private person, day-exact and calculated separately across each interest period. Plus the 40-euro flat charge where it is due.
Purchasing
Incoming invoices
Receive, check and approve your suppliers’ invoices — a photograph, a PDF or an XRechnung, all in the same inbox. Being able to receive them has been obligatory since 2025; issuing them only from 2027.
Suppliers
Your creditors with their account mapping and every bank account they have ever invoiced from — what makes the changed-IBAN warning possible.
Accounting
Accounting settings
Profit determination (balance sheet or EÜR), the VAT scheme (Soll- or Istversteuerung under § 20 UStG), the fiscal year and the chart of accounts. Set once, and every posting and report follows them.
Chart of accounts
The complete DATEV SKR03 and SKR04 chart of accounts. The revenue account you pick decides both the VAT rate and the EN 16931 category.
Bookkeeping
Every document becomes a double-entry booking. The VAT return, the open items list and a DATEV posting batch all fall out of the journal.
Open Items
Receivables and payables in one working list: filter the way accountants expect, spread one bank transfer across several invoices, offset credits, write off cent differences with the correct VAT adjustment.
Payments
The payment proposal knows the last day a cash discount can still be taken; a selection becomes a payment run with separate approval and a SEPA file (pain.001) for your bank.
Banking
Import CAMT.053, MT940 or CSV from your bank; a matching transaction marks the invoice paid and settles the booking behind it.
Assets
Capitalise what you buy and let it depreciate itself. Straight line or declining, GWG and Sammelposten included, with the asset movement schedule your adviser asks for at year end.
Cash book
Cash recorded the way cash behaves: written forward, never edited, and never below zero. With cash counts, the cash report and one-click posting into the journal.
Projects
Time tracking
Record hours with the timer while you work, or by hand afterwards. The rate is resolved automatically from activity, project, customer, person or company — and then stays on the entry, so a later price rise does not re-price weeks already worked. Open hours become an invoice at the press of a button.
Projects
What is being worked on, with its customer, rate and budget. The analysis shows per project what has been earned, what has been billed and — the figure that matters — what has not. Internal projects with no customer belong here too: not every hour is sellable, but every hour wants to be seen.
Products
Catalog
Products and services in one item master with unit, price, VAT rate, SKU and sector.
Documents
Scan
Five-step wizard: capture, adjust, process, review, export — a photographed receipt becomes a compliant e-invoice.
Documents by email
Your own address for supplier invoices. Hand it out, or forward your existing mailbox to it — what arrives is read, checked and approved like a document you uploaded. With a sender list, format and size limits, and a log that names the refused messages too, so no supplier is left sending into nothing.
Design
Templates
Template library — duplicate, publish, set a default, mark a company-neutral standard.
Invoice → Template
Upload an existing invoice PDF and get back an editable layout, plus detected customer, logo and company.
Designer
Drag-and-drop PDF editor with tables, totals, QR code, barcode, signature, data fields and undo/redo — without any programming knowledge.
Email templates
The covering note your invoice arrives with — in your words, not ours. A designer with formatting, colors, tables and placeholder chips, for eleven kinds of mail in German and English, with a signature and attachment rules. One template can serve several document types at once, individual customers can have their own, and each person can set a personal default. The preview shows what will be sent, the test mail sends it to you first, the history keeps every earlier state, and a misspelled placeholder is refused at save rather than printed at your customer. The send log records what actually went out — including what did not arrive.
Reports
Reports
Business analysis (DATEV form 01), P&L/cash-basis, trial balance with account ledger, VAT return with box numbers, revenue, payment behaviour, order backlog, cash flow, cash discount and per-partner account statements — as CSV, PDF or print view.
Administration
Companies
Full legal profile: register data, tax numbers, banking, branding and § 19 UStG small-business mode.
User Management
Invitations, access levels, per-user permission overrides and ownership transfer.
Import data
Switch without retyping: customers, suppliers, the catalogue and your open items from a CSV file, as sevdesk, Lexware Office, Papierkram and Excel export them. Semicolons, umlauts and German numbers are recognised and the columns map themselves — with a dry run first and all-or-nothing on the way in.
Numbering
Four independent number circles — invoices, quotations, order confirmations, delivery notes — each with prefix, format, padding and a yearly or monthly reset, with a live preview.
Two-factor requirement
Whether a second factor stays voluntary, is required of everyone, or only of the access levels that can move money. Setting one up stays on each person’s own profile, and that page stays reachable so nobody is locked away from the requirement they have to meet.
Billing
Plan and single-module subscriptions paid by card — the payment itself switches the module on.
Audit Logs
21 action types across 21 entity types, filterable and CSV-exportable, surviving deletion.
GoBD export
The tax-audit data handover: journal, booking lines, master data, documents, payments, assets and the hash-chained audit log in one ZIP with an index.xml that IDEA-style audit software imports directly.
Integrations
API keys and webhooks: other systems read and write through the same interface the portal uses, with the same permissions — and get told when something happens.
E-Invoicing
Three formats generated, five understood
Generate ZUGFeRD EN 16931 (Comfort), XRechnung 3.0 or pure XRechnung XML — or convert an existing PDF. Upload an XRechnung XML or a ZUGFeRD/Factur-X PDF and get a report covering XSD schema, EN 16931 business rules, the German CIUS, PDF/A-3 conformance and XML embedding.
- Plain-language errors instead of raw validator output
- Extract XML from existing ZUGFeRD / Factur-X PDFs
- ERP export as JSON or 34-column CSV
Payment and books
The bank statement closes the invoice
Import what your online banking exports — CAMT.053, MT940 or a German CSV. A transaction whose amount and invoice number agree is matched automatically; confirming it marks the invoice paid and settles the booking behind it, which clears it from the open items.
- No bank connection and no aggregator — you upload the file
- Reference matching ignores separators: RE 2026-0006 and 20260006 both hit
- Debits reconcile supplier payments the same way
Time tracking and projects
Bill hours, not just items
Anyone selling their work by the hour usually keeps the hours in a spreadsheet — and that spreadsheet is then really where the invoice comes from. Here the two belong together: recorded time becomes an invoice line without anybody retyping anything.
- A timer for the work happening now, a typed entry for yesterday's
- The rate from activity, project, customer, person or company — and frozen after that
- Open hours into an invoice, grouped by project, activity or person — every hour exactly once
Reports
Figures your tax adviser recognises at first glance
Ten reports on two bases — booked entries and issued invoices. Every header states what the numbers rest on, and every export carries it along.
- Business analysis following DATEV form 01, with % column and previous-year comparison
- From the trial balance straight into the account ledger of every posting
- VAT return with the official form's box numbers — monthly or quarterly
What's included
One price, every module
Cancel monthly, no setup fee, and the first 30 days are free.
39,90 € / per month, net
Ready to start?
Monthly plans, cancel any time, no setup fee. Your data stays on our own servers in Germany.