Internet and telephony : how to estimate your budget?

Add up the internet access, mobile lines and necessary options.

Prepare your estimate

To be gathered to cost this item

  • Number of lines and monthly price per line.
  • Quote including equipment, support and options.
  • Price after promotion and duration of commitment.

To be checked to avoid omissions and duplicates

  • Separate installation fees paid once.
  • A line included in another contract must not be added again.
  • Use separate items if the packages have different prices.

Use this estimate in your business plan

Monthly expenses

Add this item to operating expenses if its amount is not already included in another line. For a one-off expense, use a zero monthly base and an override in the planned month.

Depending on services used and usage volumes.

An annual estimate is spread over twelve months. Adjust the monthly schedule for one-off expenses, seasonality and planned due dates.

Guide updated on 14 October 2026. Parameters must come from your quotes, contracts or documented assumptions.

Choose a business model

Relevant business templates

Review this item in the following templates, depending on your business circumstances.

Calculate the monthly budget

Add up the internet access, mobile lines and necessary options.

Enter the parameters to calculate the budget. Zero means zero expense.

Fictitious example: 3 licenses × €25 per month = €75 per month, or €900 per year.

The budget is distributed at a fixed amount each month. It does not automatically track turnover, headcount, seasons or annual deadlines. It must be recalculated after modifying these assumptions.

Other positions to check