Introduction to invoicing

Here you will find basic settings for you to start using Invoicing module.

General settings

The very first set up to be performed is in Invoicing Settings General. There are items here that have impact on basic behaviour of the module. The most important items are:


Setting of price type used in the ISPadmin system:

0 - Prices entered = prices excluding VAT. Prices incl. VAT are calculated based on the specified VAT rate.
1 - Prices entered = prices including VAT. Prices excl. VAT are calculated based on the specified VAT rate.

See the examples below.

dph VAT rate
dph_low Reduced VAT rate
export Select software used for importing invoices.
pozastavit_neplatice Option to suspend a client:
0 - off
1 - If invoice meets suspension parameters client will be suspended
pozastavit_neplatice_min_castka Minimum amount for a client ‘s debt before suspension.
pozastavit_po_splatnosti Number of days after invoice due date before client gets suspended.
price_rounding Invoice rounding
splatnost_faktur Invoice due date according to a specified number of days
vs_ss_exchange 0 - Client number is stated on the invoice as a specific symbol and invoice number as a variable symbol.
1 - Client number is on the invoice stated as a variable symbol and invoice number as a specific symbol.

Calculation example following settings in cena_dph_typ:

cena_dph_typ = 1

 Price incl. VAT = 11.85 - entered in ISPadmin

Rate = 20% - entered in ISPadmin
VAT = Price incl. VAT x coefficient
Coefficient = [rate/(100 + rate)]
VAT = 11.85 * [20/(100+20)]
VAT = 11.85 * 0,1666666667
VAT = 1.975
Rounded VAT = 1.98
Price excl. VAT = Price incl. VAT - VAT
Price excl. VAT = 11.85 - 1.98
Price excl. VAT = 9.87

cena_dph_typ = 0

Price excl. VAT = 11.85 - entered in ISPadmin
Rate = 20% - entered in ISPadmin
Coefficient = [(100 + rate)/100]
Price incl. VAT = Price excl. VAT x coefficient
Price incl. VAT = 11.85 * 1.2
Total incl. VAT = 14.22
VAT = Price incl. VAT - Price excl. VAT
VAT = 14.22 - 11.85
VAT = 2.37

Create Invoice group

Invoicing Settings Invoice group

Each client belongs to a certain invoice group which represents provider´s company. If you are one company, one invoice group is sufficient. Some ISP´s compose of more companies, hence more invoice groups for each company. Each invoice group has its own logo and stamp for invoices. Also, all data such as numerical series, invoicing, statistics or clients are kept separately. Each invoice group must have its own numerical series.

Bulk Generation of Invoices

You can issue invoices in bulk by invoice groups in Invoicing Invoices Invoices.

If you are a beginner, please bear in mind not to use test invoices in real world - do not send them to client emails! As soon as you’re done with testing you can contact your technical support that will remove all test invoices from your system. This way you will always have your invoicing module ready for real invoicing.

icon info2 Useful

Creation of standalone invoice

Proforma invoices

Tips on how to use this documentation



Searching required information is possible either via structured menu which is divided into sections, or via full-text search of the entire contents of this on-line documentation.

This aid will make it possible for you to find out where exactly you are at the moment.

If, for example, the following appears beneath the main menu - ISPadmin Wiki / ENG / Client management / Menu - CLIENTS / Clients / Message Board / Groups - it means that you are:


  • in the Wiki documentation of the ISPadmin system
  • in its English localization
  • in the Client management section
  • in the Clients tab
  • in the Message board subtab
  • in the Groups sub-subtab


It contains newly added functionalities and modifications of the system which are displayed by versions and issue date. Changelog articles are also displayed in individual sections / pages of the documentation which relate to new functionality or modification. 

Basic orientation

You will find a welcoming menu with basic instruction on trying / implementing / using below. 


Frequently asked questions along with most important procedures and settings are listed in FAQ section. 


Items which refer to real system menu are highlighted in corresponding colour, including their graphical background. Eg. Invoicing Settings Templates Reminders. This is also a working reference to an article. 


NET service solution, s.r.o.
Žerotínova 3056/81a
787 01 Šumperk
Czech Republic