TWT Custom

Your package,module by module.

Start from the invoicing base and add modules: projects, scanner, banking, designer, API. Each module has its own price, and the total stays visible.

The base writes invoices and e-invoices and takes in your suppliers' invoices. Everything else you add as your work needs it, from quotations to the receipt scanner and time tracking, and after you sign in you find exactly the modules you chose. In the browser, on the tablet and as an app.

  • 30 days to test
  • Cancel monthly
  • E-invoicing in the base
  • Hosted in Germany

from 9,00 € per month, net, plus VAT

30 days to test: cancel within them and you pay nothing; if you continue, the trial month is charged with the first month. Cancel monthly. You pay for the base and the modules you choose.The trial is available once per customer.

The TWT Custom overview for Nordquell Haustechnik GmbH, whose package holds every module on offer: two supplier invoices awaiting approval and one flagged by the intake, the latest supplier invoices, four active projects and 66:00 hours this month worth €4,794.50, not yet invoiced.
Quotations in the TWT One app on a smartphone: five quotations with number, customer, date and net amount, one a draft, one sent, two accepted and one rejected.Time tracking in the TWT One app: the clock ready to start, three hours today and this week, and the latest entry, three hours on Badsanierung 2. OG worth €216.00.The overview of the TWT One app on a smartphone: two invoice drafts, ten issued invoices, seven customers, two supplier invoices waiting for approval, and the way into the modules.
  • Awaiting approval2 supplier invoices
  • Quotations accepted2 of 5
  • Not yet invoiced66:00 · €4,794.50

Why TWT Custom

Only what you need, the price in view before you buy, and room to grow.

Only what you need

Start with the base for invoices, e-invoices and supplier invoices, and add only the modules your work needs. That is exactly what you pay for.

The price before the purchase

Every module names its monthly price, and the total is added up while you choose. It stands beside your choice before you order.

Grows with you

Add a module when your business needs it, charged to the day for the month that is running, and cancel any module on its own. Your data stays where it is.

Features

The base and seven modules, each at its own price.

Every package starts from the same base, and you add the modules your work needs on top. All prices are net per month, and the full menu is listed in detail below.

The base

  • Invoices with payment terms and dunning
  • E-invoices as XRechnung and ZUGFeRD
  • Supplier invoices with checks and approval
  • €9.00 a month, in every package

Quotations and recurring invoices

  • Quotation, order confirmation and delivery note
  • An invoice straight from any of them
  • Recurring invoices, written once
  • Quotations €6.00, recurring invoices €4.00 a month

Receipt scanner

  • Photograph or upload a receipt
  • Edges found, fields read on our own servers
  • Checked against EN 16931 before export
  • €6.00 a month

Projects and time

  • Customer, hourly rate and budget per project
  • Start the clock, or enter hours by hand
  • Open hours invoiced in one step
  • €8.00 a month

Banking

  • Statements as CAMT.053, MT940 or CSV
  • Payments matched to your invoices
  • You confirm, the invoice is paid
  • €12.00 a month

Designer and API

  • Your own invoice layout, by drag and drop
  • An editable template from a PDF invoice
  • API and webhooks for your other systems
  • Designer €8.00, API €12.00 a month
All 36 features in detail
  • DashboardDashboard

    What needs doing today and the figures behind it, cut to your package: invoices, supplier invoices awaiting approval, hours and projects, or the books. Plus a guided first-run checklist.

  • SalesQuotations

    Quotation, order confirmation and delivery note in one chain — each turns into the next with one click, each on its own number circle.

  • SalesInvoices

    Draft to finalized, line items with per-line VAT and UN/ECE units, signature capture, QR code, duplicate and bulk actions.

  • SalesRecurring

    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.

  • SalesE-Invoice

    E-invoices to the German standard: generate, convert, read and validate ZUGFeRD and XRechnung against EN 16931.

  • SalesCustomers

    Buyer master data including VAT ID, flowing straight into the e-invoice as BT-48.

  • SalesPayment 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.

  • SalesReminders

    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.

  • PurchasingIncoming 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.

  • PurchasingSuppliers

    Your creditors with their account mapping and every bank account they have ever invoiced from — what makes the changed-IBAN warning possible.

  • AccountingBanking

    Import CAMT.053, MT940 or CSV from your bank; a matching transaction marks the invoice paid and settles the booking behind it.

  • ProjectsTime tracking

    Record hours with the timer while you work, or by hand afterwards. The rate comes automatically from the activity or the project 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.

  • ProjectsProjects

    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.

  • ProductsCatalog

    Products and services in one item master with unit, price, VAT rate, SKU and sector.

  • ProductsStock

    The quantity on hand per article with a minimum level and a storage location; what is below its level stands at the top.

  • ProductsStock movements

    Every change as an entry with date, quantity and reason: goods received, sold from the invoice, returned, corrected, counted.

  • ProductsInventory count

    Count, see the system quantity and the difference, complete — the stock is set to what was counted.

  • DocumentsScan

    Five-step wizard: capture, adjust, process, review, export — a photographed receipt becomes a compliant e-invoice.

  • DocumentsDocuments 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.

  • DesignTemplates

    Template library — duplicate, publish, set a default, mark a company-neutral standard.

  • DesignInvoice → Template

    Upload an existing invoice PDF and get back an editable layout, plus detected customer, logo and company.

  • DesignDesigner

    Drag-and-drop PDF editor with tables, totals, QR code, barcode, signature, data fields and undo/redo — without any programming knowledge.

  • DesignEmail 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.

  • AdministrationCompanies

    Full legal profile: register data, tax numbers, banking, branding and § 19 UStG small-business mode.

  • AdministrationUser Management

    Invitations, access levels, per-user permission overrides and ownership transfer.

  • AdministrationTax advisor

    Who, besides your own people, may reach your data. A practice asks, you decide, and you can withdraw the access at any time — your own users are untouched.

  • AdministrationImport 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.

  • AdministrationNumbering

    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.

  • AdministrationTwo-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.

  • AdministrationBilling

    Plan and single-module subscriptions paid by card — the payment itself switches the module on.

  • AdministrationTWT invoices

    Every invoice from TWT in one place, across all modules, with the payment status per module and each invoice as a PDF.

  • AdministrationCancellation

    Contract, end of term and cancellation in one place. Paid time stays usable to the end of the period, and the cancellation can be withdrawn until then.

  • AdministrationAudit Logs

    21 action types across 21 entity types, filterable and CSV-exportable, surviving deletion.

  • AdministrationIntegrations

    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.

  • AdministrationSupport

    Help from inside the product: ask a question, attach a screenshot, read the answer in the same thread. Each person sees only their own requests.

  • AdministrationNotifications

    Where the product writes to: e-mail, Telegram or WhatsApp — one set for the company, and one of their own for each person. With a test message, so a wrong number is caught at once instead of staying silent.

How it works

One package, module by module

Real screens from TWT Custom with example data: a heating and plumbing business whose package holds every module on offer. The base first, then what the modules add.

Invoices in the portal: two drafts and ten issued invoices from July to September 2026, each on the Standard-Rechnung (Deutschland) template, with customer, date, amount and status.
Drafts and issued invoices in one list, each on the standard template for Germany and numbered without gaps.

01 In the base

Invoices and e-invoices, in every package.

  • E-invoice as XRechnung or ZUGFeRD
  • Unchangeable once issued, corrected by a cancellation invoice
  • Payment terms with Skonto, and dunning
Supplier invoices: eight e-invoices, by e-mail or uploaded, with number, date, due date, amount and status, one of them flagged by the check.
Eight e-invoices, by e-mail or uploaded, each with its due date, amount and status; whatever the check finds is flagged.

02 In the base

Your suppliers' invoices, checked and approved.

  • XRechnung and ZUGFeRD in the same inbox
  • Approval by the right person, with limits
  • A warning on a new bank account
Quotations in the portal: five quotations from August and September 2026 with customer, validity, amount and status, one a draft, one sent, two accepted and one rejected.
Five quotations with customer, validity, amount and status: one a draft, one sent, two accepted and one rejected.

03 Quotations · €6.00 a month

From the quotation to the order and the invoice.

  • Quotation, order confirmation and delivery note in one chain
  • An invoice straight from any of them
  • Sent by e-mail with its archived PDF
Time tracking in the portal: twelve entries in September 2026 with project, activity, note, person, duration and value.
Twelve entries by two fitters in September, each with project, activity, note, duration and value.

04 Projects and time · €8.00 a month

Every hour with its project, activity and value.

  • Start the clock on site, or enter hours by hand
  • Hourly rate per project or activity
  • Open hours invoiced in one step

Receipt scanner · €6.00 a month

The receipt photographed, its edges found

Take a picture of a receipt or upload it. The scanner finds its edges, straightens it and reads it on our own servers.

The receipt scanner: a till receipt from a builders' merchant, photographed on a desk, its edges found and ready to be read.
  1. 01

    Base

    Invoices, e-invoices and supplier invoices

  2. 02

    Modules

    Chosen one by one, each at its price

  3. 03

    Total

    Beside your choice, before you buy

  4. 04

    Your menu

    Exactly the modules of your package

Who it is for

For businesses that want a package of their own rather than a ready-made one.

  • Small businesses

    The base alone is often enough: invoices, e-invoices and your suppliers' invoices.

  • Trades

    Projects and time for the fitters' hours, and the receipt scanner for the till receipt from the builders' merchant.

  • Service companies

    Quotations that become orders, and recurring invoices for maintenance and service contracts.

  • Growing businesses

    Start small and add a module as soon as the work asks for it.

  • Businesses with their own software

    The API and webhooks connect your other systems, with the same rights as the portal.

Requirements

E-invoicing and the rules for your documents, from the base on.

Every TWT Custom package supports you with the requirements for invoices and receipts in Germany.

E-invoice receipt

Since 2025 every business in Germany must be able to receive e-invoices. XRechnung and ZUGFeRD arrive in your inbox, checked against EN 16931.

E-invoices you send

From 2027 businesses with more than €800,000 turnover must send e-invoices, from 2028 every business. The base of TWT Custom writes XRechnung and ZUGFeRD today.

Unchangeable once issued

An issued invoice is numbered without gaps and locked, as the GoBD require. A correction is a cancellation invoice with reference to the original, never a deletion.

Retention

Invoices and receipts must be kept for eight years since 2025 (§ 14b UStG, § 147 AO). In TWT Custom an issued invoice stays as it was issued, and a supplier invoice keeps the original file it arrived as.

TWT Custom provides functions for proper invoices and records. The tax obligations of your business remain yours; when in doubt, ask your tax adviser.

Devices

Your package, on every device.

TWT Custom runs in your browser on every computer and tablet, and on Android in the TWT One app.

  • Time tracking in the TWT One app: the clock ready to start, three hours today and this week, and the latest entry, three hours on Badsanierung 2. OG worth €216.00.

    Smartphone

    A package of your own uses the TWT One app for Android. It opens the modules of your package, such as quotations, the clock for the job and invoices on the move; a module you have not chosen shows in the menu as "not in your plan". The app for iPhone and iPad is in preparation.

  • The TWT Custom overview in the browser on a tablet.

    Tablet

    In the browser, with the whole portal: the overview with the supplier invoices, the projects and the hours.

  • The receipt read: receipt 20840 of 8 September 2026 from Baumarkt am Leineufer with its address, ready to check against EN 16931 and export.

    Browser

    On your computer or laptop, with nothing to install.

Getting started

Ready in a few steps.

Tick your modules in the configurator, enter your company and bring in your customers and suppliers from a CSV file.

25 common payment terms and a standard invoice template are already set up.

If you have questions, our support team helps you personally.

Get started
  1. AssembleChoose the modules, see the total and test it for 30 days without obligation.
  2. Set upYour company, your customers and your suppliers.
  3. Get goingSend the first invoice, and add a module whenever you need it.

Pricing

Pay for what you pick, nothing else.

TWT Custom

from 9,00 €the base, net per month, plus VAT

  • No setup fee
Assemble your packageCompare all packages →

In every package

  • Invoices with payment terms and dunning
  • E-invoices as XRechnung and ZUGFeRD
  • Supplier invoices with checks and approval
  • Customers, suppliers and templates
  • Every module chosen and cancelled on its own
  • 30 days to test without obligation

TWT One

Choosing nearly everything?

If you would pick most of the modules anyway, TWT One brings all of them for one monthly price, and with them the bookkeeping and the reports that no package of your own contains.

TWT Custom is part of the TWT One ecosystem.

Discover TWT One →
  • Bookkeeping
  • Reports
  • Banking
  • Projects and time
  • Designer
  • API and webhooks

A closer look

For those who want to know exactly

E-invoicing and the rights of every single person come with every package. The receipt scanner and time tracking are shown as they work once you choose them.

Learn more

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
Supplier invoices: eight e-invoices, by e-mail or uploaded, with number, date, due date, amount and status, one of them flagged by the check.
  • In every package8 e-invoices · by e-mail or upload
  • Flagged on arrivalHV-2026-1240 · a new bank account

Document Scan From paper receipt to e-invoice

Photograph or upload an invoice. The receipt edge is detected automatically, layout and fields are read, units are inferred from a German keyword dictionary, and gross/net totals are reconciled against the printed total — then exported as ZUGFeRD or XRechnung.

  • Runs on our own servers — not a third-party cloud OCR
  • HEIC, JPG and PNG, converted in the browser
  • Live EN 16931 completeness check before export
The receipt read: receipt 20840 of 8 September 2026 from Baumarkt am Leineufer with its address, ready to check against EN 16931 and export.
  • Read on our serversReceipt 20840 · Baumarkt am Leineufer
  • Optional moduleReceipt scanner · €6.00 a month

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 the activity or the project — and frozen after that
  • Open hours into an invoice, grouped by project, activity or person — every hour exactly once
Time tracking in the portal: twelve entries in September 2026 with project, activity, note, person, duration and value.
  • Hours in September66:00 · 2 fitters · 4 projects
  • Optional moduleProjects and time · €8.00 a month

Access Control A real ACL, not role labels

More than 130 permission keys, organised as a module → component → action tree. Every member starts with the rights of their role; on top of it you grant or withhold single rights for exactly that person, and a withheld right always wins.

  • One key gates the API, the menu and the route
  • Modules you cannot reach never ship their JavaScript
  • Changes apply on the user's very next navigation

Company Role: Power User· 68 from the role68/102

  • Invoices+1−19/12
    • List
    • View
    • Create
    • Edit
    • Delete
    • Finalize− withheld
    • Grant a cash discount after the deadline+ granted
    • Export
      • Custom PDF
    • Recurring invoices
      • List
      • Create
      • Edit
      • Delete
  • User Management0/6
    • List
    • Invite
    • Edit
    • Remove
    • Teams
      • List
      • Manage
  • Quotations6/7
  • Projects and time tracking7/10
  • Withheld for this personInvoices · Finalize
  • Granted to this personInvoices · Grant a cash discount after the deadline

FAQ

Frequently asked questions

What does the base include?

Invoices with payment terms and dunning, e-invoices as XRechnung and ZUGFeRD, your suppliers' invoices with checks and approval, plus customers, suppliers, templates and user management. The base costs €9.00 net per month and is part of every package.

What do the modules cost?

Receipt scanner €6.00, quotations €6.00, recurring invoices €4.00, projects and time €8.00, designer €8.00, banking €12.00, and API and webhooks €12.00, each net per month. The configurator shows the total beside your choice before you order.

Can I change my package later?

Yes. On the billing page you add a module whenever you need it, charged to the day for the month that is running. Every module can also be cancelled on its own while the others keep running.

Does a package of my own include bookkeeping?

No. The journal, the advance VAT return and the reports are not among the modules you can choose. They are in TWT Accounting, and in TWT One, which holds every module.

Can I send and receive e-invoices?

Yes, in every package. The base issues invoices as XRechnung or ZUGFeRD according to EN 16931, and your suppliers' e-invoices arrive by e-mail or upload, are checked against EN 16931 and go to the right person for approval.

Which app do I use on my phone?

The TWT One app for Android. It opens the modules of your package; a module you have not chosen shows in the menu as "not in your plan". The app for iPhone and iPad is in preparation.

When is TWT One the better choice?

When your package would hold most of the modules, or when you want to keep your books as well. TWT One contains every module and the bookkeeping for one monthly price.

Can I test TWT Custom before I pay?

Yes. You test it for 30 days: cancel within them and you pay nothing. If you continue, the trial month is charged together with the first month; after that you pay for the base and your modules monthly, with no setup fee, and you can cancel monthly.

Ready for TWT Custom?

30 days to test: cancel within them and you pay nothing. Then cancel monthly, with no setup fee. Your data stays on our own servers in Germany.