---
title: "About averaging conventions"
description: "Averaging conventions determine how fixed assets must be depreciated for the financial period within which they are acquired or disposed of."
lang: en
languages:
  en: https://docs.vismasoftware.no/visma-net-erp/help/fixed-assets/manage-fixed-asset-depreciation/about-averaging-conventions/index.md
lastmod: 2026-02-19
---

> Documentation index: https://docs.vismasoftware.no/visma-net-erp/help/fixed-assets/manage-fixed-asset-depreciation/llms.txt


# About averaging conventions

Last modified February 19, 2026

> Averaging conventions determine how fixed assets must be depreciated for the financial period within which they are acquired or disposed of.


Assets usually are not put into service on the first date of the financial period; similarly, they are seldom disposed of on the last date of the financial period.

+ Visma Net provides built-in averaging conventions, which significantly simplify the calculation of depreciation. In the [Depreciation methods (FA202500)](https://docs.vismasoftware.no/visma-net-erp/help/fixed-assets/fixed-asset-windows/depreciation-methods-fa202500/index.md) window, you specify the averaging conventions that best fit the selected depreciation method. If you select a built-in depreciation method, the system automatically assigns the statutory-allowed averaging convention for the depreciation book; however, you can manually change the convention.
+ Some averaging conventions require the system to determine the middle of the financial period. You can specify the rule for determining the middle of the period for averaging conventions assigned to each depreciation book by using the **Mid period type** and **Day in mid period** columns in the [Books (FA205000)](https://docs.vismasoftware.no/visma-net-erp/help/fixed-assets/fixed-asset-windows/books-fa205000/index.md) window.

## Built-in options for averaging conventions in Visma Net

<table class="vismanet-table">
  <colgroup>
    <col class="vismanet-table__col--key">
    <col>
  </colgroup>
<thead class="vismanet-table__head">
  <tr class="vismanet-table__header-row">
<th class="vismanet-table__cell vismanet-table__cell--header">Option</th>
<th class="vismanet-table__cell vismanet-table__cell--header">Description</th>
</tr>
</thead>

<tr class="vismanet-table__row">
<td class="vismanet-table__cell">Full period</td>
<td class="vismanet-table__cell">Depreciation is calculated for the full financial period when the asset was acquired. When the asset is disposed off, no depreciation is calculated for the period of disposal.</td>
</tr>

<tr class="vismanet-table__row">
<td class="vismanet-table__cell">Mid-period</td>
<td class="vismanet-table__cell">When an asset is acquired (or disposed off), depreciation is calculated for the half financial period when the asset is acquired (or disposed off).</td>
</tr>

<tr class="vismanet-table__row">
<td class="vismanet-table__cell">Next period</td>
<td class="vismanet-table__cell">N o depreciation is calculated for the financial period when the asset is acquired; depreciation is instead calculated starting from the period after the acquisition period. Depreciation is then calculated for the full financial period in which the asset is disposed off.</td>
</tr>

<tr class="vismanet-table__row">
<td class="vismanet-table__cell">Modified half period</td>
<td class="vismanet-table__cell">If an asset was acquired within the first half of the financial
period, depreciation is calculated for a full period, and no extra periods are added
for asset depreciation.
If an asset was acquired during the second half of the
financial period, depreciation is calculated for half the amount for that period.
It
is also calculated for half the amount of the last asset life period, and this
period is added to the end of the asset&rsquo;s lifetime.
That is, the number of
depreciation periods increases by 1, and the depreciation is calculated for half of
the first period and for half of the last one.</td>
</tr>

<tr class="vismanet-table__row">
<td class="vismanet-table__cell">Modified half period 2</td>
<td class="vismanet-table__cell">If the asset was acquired within the first half of the financial period, depreciation is
calculated for a full period, and no extra periods are added for asset depreciation.
If the asset was acquired within the second half of the financial period,
depreciation is not calculated for that period.
Also, if depreciation is calculated
for the extra asset life period, this period is added to the end of the asset&rsquo;s
lifetime.
That is, the number of depreciation periods increases by 1, and
depreciation is not calculated for the first period but is fully calculated for the
last one.</td>
</tr>

<tr class="vismanet-table__row">
<td class="vismanet-table__cell">Full quarter</td>
<td class="vismanet-table__cell">Depreciation is calculated by using the appropriate percentage of annual depreciation (acquisition and disposal), which depends on the quarter when the asset was acquired or disposed.</td>
</tr>

<tr class="vismanet-table__row">
<td class="vismanet-table__cell">Mid quarter</td>
<td class="vismanet-table__cell">Depreciation calculation is based on the acquisition or disposal percentage of annual depreciation, which depends on the quarter when the asset was acquired or disposed off.</td>
</tr>

<tr class="vismanet-table__row">
<td class="vismanet-table__cell">Full year</td>
<td class="vismanet-table__cell">Depreciation is calculated for the full year
during which the asset was acquired.
No depreciation is calculated for the year the
asset was disposed off.</td>
</tr>

<tr class="vismanet-table__row">
<td class="vismanet-table__cell">Mid year</td>
<td class="vismanet-table__cell">Depreciation is calculated for the half year when the asset was acquired or disposed off.</td>
</tr>

<tr class="vismanet-table__row">
<td class="vismanet-table__cell">Full day</td>
<td class="vismanet-table__cell">The most accurate calculation method.
With it selected,
depreciation is calculated for the days in the period starting from the day when the
asset was acquired or disposed of.</td>
</tr>

</table>


<h2>Related pages</h2><h3>Concepts</h3>
<ul><li><a href="/visma-net-erp/help/fixed-assets/manage-fixed-asset-depreciation/about-depreciation-methods/index.md">About depreciation methods</a></li><li><a href="/visma-net-erp/help/fixed-assets/manage-fixed-asset-depreciation/about-depreciation-configuration/index.md">About depreciation configuration</a></li>
</ul><h3>Tasks</h3>
<ul><li><a href="/visma-net-erp/help/fixed-assets/manage-fixed-asset-depreciation/configure-formula-based-depreciation-methods/index.md">Configure formula-based depreciation methods</a></li>
</ul><h3>Windows</h3>
<ul><li><a href="/visma-net-erp/help/fixed-assets/fixed-asset-windows/depreciation-methods-fa202500/index.md">Depreciation methods (FA202500)</a></li>
</ul>


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