> For the complete documentation index, see [llms.txt](https://help.immodio.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.immodio.app/en/anleitung/einnahmen-und-ausgaben/buchhaltung-erweiterung/10144700-vorauszahlung-nebenkosten-betriebskosten.md).

# Advance payments for service charges / operating costs

Help on the Immodio entry item Advance payment of ancillary costs / operating costs.

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Use this category for amounts of ancillary costs or operating costs agreed with the tenant as a monthly **advance payment**.

Only record payments here that the tenant actually made as an **advance payment of ancillary or operating costs** and that belong to the settlement period. Advance payments that were not made should not be entered as a payment. They are first of all arrears on the tenant's part and would wrongly reduce the statement in the tenant's favour.

An **advance payment** is a payment on account towards the operating costs to be billed later. Unlike a **flat rate** it is set off against the costs actually incurred. This can result in a credit balance or an additional payment in the operating cost statement.

You can find further information on advance payments for operating costs [here](/en/anleitung/mietverhaltnisse/mietverhaltnis-anlegen/betriebskosten/vorauszahlung-der-betriebskosten.md).

Also note whether an **advance payment** or a **flat rate** was agreed in the rental agreement. You can see this under [**Tenancy details**](/en/anleitung/mietverhaltnisse/mietverhaltnis-ubersicht/details-mietverhaltnis.md).

{% hint style="info" %}
**This category does not cover** the net base rent, rent deposits, additional payments from an operating cost statement already prepared or amounts of ancillary costs agreed as a flat rate.
{% endhint %}