Invoicing, Expense and Refund Management (IERM)

Automate invoicing, expense, and refund management. The easy invoicing tool allows multicurrency client billing. Keep costs in check with Dashboards and notifications of excelled spending.

Invoicing, Expense and Refund Management

What is Invoicing, Expense - and Refund Management

Processing invoices, expenses, and refunds

Invoice Management, also known as invoice processing, is billing customers for consumed products, services, or time. Automation can help to improve the invoicing flow by sending automated reminders for unpaid invoices. 

Expense and refund management tracks the expenses of employees and even automates the refunding process. 

Both systems allow for better tracking of cash flow and give an overview for managers.


Expense Tracking

Track, manage and pay expenses, project - or employee based.
Decorator Invoicing, Expense and Refund Management

Credit Notes

Issue and manage Refunds or Credit Notes towards your clients.
Decorator Invoicing, Expense and Refund Management
SIX ERP Testimonial Cubes
“ The easiest and fastest ERP I worked with. Fabulous support and excellent data integrations. Using it for all of my companies and I have to say.. I am truly satisfied. ”

All the features you need to manage invoices, expenses, and even refunds

Manage your cash flow with all the incoming and outgoing invoices. Get full traceability of invoices and expenses.

Automate the invoicing workflow

Automate the invoicing workflow

Get your invoices paid faster

Make invoices, send the invoices immediately, notify someone overdue, and offer online payments. The invoicing process can even handle multiple currencies and can be connected with your ecommerce.

An additional feature is the "Invoice Merging" - Combine unlimited invoices into a single invoice for easier processing. Automate your payment reminders and customer notifications via eMail, SMS, or custom dashboards.

  • Automate your invoicing
  • Notify your customers via many channels
  • Integrate with ecommerce
  • Manage multiple currencies
Trace customer related expenses

Trace customer related expenses

Expense Tracking and Expense Management

Track all expenses related to customers, projects, or even tasks. Get a simple expense tracking in place that even handles multicurrency expense management. This integration allows for transparent expense processing and fast billing.

  • Track expenses for customers, projects, and tasks
  • Multicurrency Expense Management
  • Transparent expense tracking
Track refundable expenses for employees

Track refundable expenses for employees

Easily manage allowances and refund your staff

Track all expenses your employees cover and automate the process of refunding. Managing these expenses gets more manageable and even allows for a better overview—set allowances and track expenses of employees with a single dashboard.

  • Manage employee allowances
  • Track expenses and reimburse them
  • Attach invoices to expenses

The Invoicing Solution leading companies trust

Tap into a global network of companies who already know and trust SIX.

200,000+ Invoices

have been issued by SIX

450,000+ Expenses

tracked and managed by SIX

500+ companies

use SIX to drive business and growth

Empowering independent business owners everywhere

We are not SaaS - You own your data!

Own your Invoicing and Expense data

You have your own decoupled pods with all your data. You decide who can access invoice and expense-related data. You own your data - always!

European solution

Trusted solution built with the strict European standards in mind. SIX is built for leading global companies.

GDPR compliant

Be on the safe side when it comes to data compliance. Our GDPR module makes it possible to manage all data without any hassles safely.

We are not SaaS - You own your data!

Interesting Blog Articles

Understanding Warehouse Management Solutions
A warehouse management system (WMS) is a software application that supports the day-to-day operations in a warehouse. A WMS helps to control and direct the movement of materials within a warehouse and plays an essential role in optimizing the efficiency of these operations. There are many things to consider when...
ERP Business Needs
Why Every Business Needs an ERP System
Every business needs an ERP system. An ERP, or enterprise resource planning, system is a software application that enables a company to automate and track tasks across all departments. By implementing an ERP system, businesses can improve communication within the organization, make better use of resources, and reduce costs. ERP...
What is Enterprise Resource Planning (ERP)?
If you're an entrepreneur, then you know that managing a company can be difficult. You may be using some software to help manage parts of your company or sales, but you will likely reach the boundaries of the manageability of data shortly after starting your business. It would help if you...

Want to see SIX for yourself?

Need help, have questions or want to get a free demo?

Please read our Privacy Policy on how we process personal data. We will never share your data!