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# I have a question about my invoice

Got an unexpected line, an amount you don't recognise, or a status you're not sure about? Here's how to get clarity fast.

## Step 1 — Pull up the invoice

1. Go to **Settings → Workspace → Plan & Billing**.
2. Scroll to **Billing history** and click **Download** on the invoice.

The PDF shows every line: plan year (seats × price × months), onboarding fee, modules, seat expansions, credit packs, taxes.

## Step 2 — Common invoice puzzles

### "Why is there an extra invoice mid-year?"
Most likely a **seat expansion**: adding seats on an annual term issues an immediate prorated invoice for the months left. Check the **Seat history** log on the plan card — it lists who added seats, when, and the amount.

### "What is this €300 / €1,300 / €4,400 charge?"
A **one-time credit pack** bought from **Add credits**. Packs are charged immediately by card.

### "My recurring amount went up"
Either a **credits addendum** (raising the credits per user, +€20 per block of 100) or a **module** added to your contract. Both were signed electronically by an admin and appear on your order as addenda.

### "Why isn't my discount applied to the module?"
The commitment scale discounts the **Core** plan only. Modules and credits are always at list price.

### "Why is there VAT / tax?"
- French customers: 20% VAT.
- EU customers with a valid VAT number on the order: reverse-charge, 0%.
- EU customers without a VAT number: French VAT applies.
- Non-EU customers: no VAT.

### "The invoice says Overdue"
It's open and past its due date. Card and SEPA are charged automatically on the due date, so an overdue card/SEPA invoice usually means a failed charge — update your payment method. Bank transfers are due within your net terms.

## Step 3 — Check your seat count

The seats billed should match **Seats purchased** on the plan card, not the number of active members (you can have fewer members than seats).

## Step 4 — Contact billing support

Email **contact@katalyz.co** with the invoice number, the line you're questioning, and what you expected. We answer within one business day. Genuine mistakes are corrected on the next invoice or refunded.

## Related articles
- [Downloading invoices](https://katalyz.crisp.help/en/article/downloading-invoices-1vdrnue/)
- [Updating billing information](https://katalyz.crisp.help/en/article/updating-billing-information-a35tic/)
- [Adding seats](https://katalyz.crisp.help/en/article/adding-or-removing-seats-1xzkfdy/)