# Fund a campaign

You can fund a campaign using a reward tier or a custom amount. Both paths mint an NFT receipt & Perks (if available)

### Before you start

* Connect your wallet.
* Ensure you have $**CAMP Tokens** for the contribution and gas.
* Verify you are on **Camp Network**.

{% hint style="warning" %}
Only fund campaigns from links you can verify. Prefer links shared by the creator’s official accounts.
{% endhint %}

### Option A: fund via a tier

1. Open a campaign.
2. Choose a tier.
3. Click **Support this tier**.
4. Confirm the transaction in your wallet.

### Option B: fund a custom amount

1. Open a campaign with custom funding enabled.
2. Enter a $CAMP amount.
3. Click **Support with custom amount**.
4. Confirm the transaction in your wallet.

### What happens on-chain

After a successful contribution:

* $CAMP moves to the campaign contract.
* Your contribution is recorded.
* Tier counters update.
* You can mint an ERC-721 receipt NFT.
* If your tier includes perks, you may be prompted for fulfillment details.

See [Supporters Perks](/documentation/creator-vault/campaigns/supporters-perks.md) for receipt NFTs and perk fulfillment (physical + digital).

### Common questions

**Can I contribute multiple times?**

You can usually fund multiple times. Receipt minting is still limited to one per tier (or custom funding) per campaign, per wallet.

**What if my transaction fails?**

* Make sure you have enough CAMP for gas.
* Retry with a higher gas setting if your wallet supports it.
* If the campaign ended, funding may be blocked by the contract.


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