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Invoicing software

Whether in the office on a PC, or on a laptop, tablet, or smartphone on the road, it has never been easier to create quotes and invoices.
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Individual quote and invoice templates
Overview of customer data
Automatic sending of reminders

Create quotes and invoices quickly and easily

Professional quotes and invoices

With 1&1 IONOS Online Accounting, you can easily and intuitively create professional invoices and quotes. Customer addresses and item descriptions are automatically entered from a clearly arranged list. In addition, you can conveniently create invoices either at home or on the move, all thanks to the automatic creation of quotation and invoice numbers.

Individual designs

All design templates can be customised and adapted to suit your company's style – including an individual logo. Existing templates and letter heads can be uploaded at any time.

Write invoices

The intuitive and easy-to-use program allows you to create professional invoices which can be automatically converted to revenue-surplus reports. All files can be sent with just a click of the mouse, saving you lots of time.

Create quotes

Create and send professional quotes to prospective customers with just a few clicks. All required information is automatically entered from previously stored data.

Down and partial payments

Down or partial payment options are also available. The invoiced amount is simply divided and split into several different partial amounts.

Print or send online

Whether you want to print out your invoice or send it via email, the choice is yours. Simply select either Print or Send and the rest of the process is automatically completed.

Cancellations and credits

Create and send cancellations and credits with just one click, keeping your financial overview always up-to-date.
Package overview


Quotes and Invoices

£5/monthexcl. VAT

Create and send quotes and invoices. Overview of customer and order information.

1 user

Prices excl. VAT may be subject to change dependent upon your country of residence. Terms and conditions apply.

Complete overview of customer data

Customer base and documents always available

With 1&1 IONOS Online Accounting, index cards and excel sheets with addresses and telephone numbers are a thing of the past. Manage your customer contact details with just a few clicks – available and online at any time. Information is stored on a clear and central database with access available anytime, from anywhere.

Recurring invoices

Create regular invoices through an automatic repetition tool, with all follow-up statements to be automatically sent out.

Central master data management

All customer, supplier, and product information is managed in a secure, central location. Relevant data is automatically entered on the selected quote and invoice templates.

Clearly sorted

All quotes and invoices and customer history is displayed in an organised list and can be sorted and filtered at will.

Immediate status adjustments

Once an invoice has been sent to a customer, a new status is automatically created on the equivalent account.

Securely archived

All quotes and invoices are automatically saved and archived, meaning you can easily sort and filter into relevant lists.

Payment reminders and warnings

Payment reminders and warnings can be automatically generated and sent immediately.

More features of our accounting solutions


  • Digitally file and send documents directly with a smartphone
  • Manage your cash book online
  • Separate access for employees and tax advisors
  • Create and maintain an overview of costs

Inventory Manager

  • Up-to-date stock inventory overview
  • Write and dispatch delivery slips in seconds
  • Easily book stock entries and dispatches
  • Check customer/supplier prices

Invoicing software

FAQs - Frequently asked questions
Yes. The online billing software is an effective tool to use together with your tax consultant in order to produce legally compliant invoices. The intuitive interface allows you to create invoices and prompts you to insert missing information such as the tax code. It should be mentioned that the VAT rate in our software is set to 19% by default, so be sure to double check that the rate is correct with your professional tax consultant when preparing an initial invoice. You only need to enter the data once; from then on, the invoicing software will fill out the required information automatically. For example, customer addresses only need to be entered once as master data, which is then stored and used for recurring invoices. This way, you don't need to repeat the entry process every time, allowing you to save time and energy for your core business instead.

If you want to turn prospects into customers, you need a professional and compelling offer—which you can create just as quickly together with your tax consultant and the online invoicing software. Don't let the next customer pass you by; convince them with your offer.

You can use the software to create professional invoices from anywhere—whether you're at home, at work or on the move. You can also access your personal account from any device; with the invoicing software, bookkeeping is totally flexible and location-independent.

What's more, the billing software powered by sevDesk always generates consecutive invoice numbers—meaning one less thing to think about. When it comes to identifying invoices, sequential invoice numbers are a must.

Small businesses and freelancers also need to promote themselves: communicate your name or your brand continuously to make sure that your customers recognise it. Professionally designed invoices are an opportunity to advertise. With the 1&1 IONOS invoicing software, you can design your invoices yourself: the letterhead, logo and layout can all be customised according to your taste. No specific design skills are required—thanks to the intuitive interface, you can handle the process quickly and easily. As always, we recommend that you have a professional tax consultant look over your initial invoice to ensure absolute compliance with the law.
There are many advantages to using the 1&1 IONOS invoicing software online, such as the integrated post interface. This enables you to send your finished invoices directly by post without having to print them, put them in an envelope and post them yourself. If you want to send your invoices by email, the invoicing software helps you to complete your email automatically with the invoice as a PDF attachment. Simply click send and your invoice is on its way. Of course, you can also download the PDF file to send the invoice yourself or keep a copy for your records.

If you want to export important files, the online billing software enables you to send your files in either CSV, PDF or ZIP format. Again, don't forget that the VAT is set to 19% as standard, but it can be easily adjusted. If you require more assistance determining what the current rate of VAT is, please consult your professional tax consultant.
The accounting program not only assists with the creation of invoices, but also with the cancellation of invoices too. With the invoicing software, you can cancel and rectify any incorrect invoice in just a few clicks. Then, all you need to do is send the relevant cancellation invoice to the customer. Thanks to the software's simple and intuitive usability, you save considerable time and stress.
With the 1&1 IONOS accounting program powered by sevDesk, you benefit from total flexibility—regardless of whether you need the invoicing software for Mac or Windows. The software is also available as an app for iOS and Android, allowing you to create invoices on your smartphone or tablet.

Take online billing into your own hands with the 1&1 IONOS invoicing software. If you have further questions about the online software, contact our expert hotline.
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