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# How to add taxes to a lease that has already started in Plexflow

You can add or change the **applicable taxes (GST and QST)** on a lease that is already underway in Plexflow.
This is done directly from Rent Details.

### Steps

#### Step 1 – Go to Rent Details

Open the **Rents** section, then select the **active lease** you want to change.

#### Step 2 – Click “Edit”

In the top right of the record, click the **Edit** button to turn on edit mode.

![Rent Details with the Edit button](https://storage.crisp.chat/users/helpdesk/website/-/9/9/5/a/995a701e47028800/etape-2_1teos4p.png)

#### Step 3 – Select or add the tax

In the **Tax** line, open the **drop-down menu** and select the applicable tax:

![Tax drop-down on Rent Details](https://storage.crisp.chat/users/helpdesk/website/-/9/9/5/a/995a701e47028800/etape-3_1fos014.png)

⚠️ **Important note**
If you **do not see the drop-down menu** or the taxes are not set up yet, click **Manage**.
You can then follow the detailed steps in this article:
👉 [How to add taxes when creating a new lease in Plexflow](https://help.plexflow.ca/fr/article/ajouter-des-taxes-lors-de-la-creation-dun-nouveau-bail-dans-plexflow-cnnlgn/#4-etape-5-ajouter-les-taxes-individuelles)

#### Step 4 – Save the changes

Once the tax is selected, click **Save** to record the change.