When you launch a native ad campaign on Mintfunnel, our system reserves a portion of your wallet balance to ensure your campaign has sufficient funds to operate as configured. This article explains how this reservation system works and why it matters.
What Is a Reserved Budget?
A reserved budget is the amount of money Mintfunnel sets aside from your wallet balance for a specific campaign. It is not immediately spent, but it's held to cover potential click costs during the campaign’s lifetime.
Why Are Funds Reserved?
The reservation system ensures:
Your campaign won’t run out of funds mid-flight
Mintfunnel can confidently enter your ad into auctions
You stay within your specified daily and total budget
This helps prevent overspending while allowing real-time bidding decisions to happen efficiently.
How Is the Reserved Amount Calculated?
At campaign setup, the reserved amount is calculated based on:
Your daily budget
Your max CPC (cost-per-click)
For example, if your daily budget is $20 and your max CPC is $1.00, the platform may reserve up to $20 from your wallet to guarantee budget availability for the day’s activity. This doesn't mean it will all be spent, it’s just allocated.
What Happens If My Wallet Balance Is Low?
If your wallet balance cannot cover the full reserved amount:
The campaign will not start or may pause
You’ll need to add funds via Stripe to resume or launch campaigns
Wallet top-ups can be done any time from your dashboard.
When Are Funds Actually Spent?
You are only charged when someone clicks your ad.
Can I Use the Same Wallet for Multiple Campaigns?
Yes. Multiple campaigns can run from the same wallet. Each one will reserve its portion independently, as long as enough funds are available.
Key Takeaways
Reserved budgets hold but don’t spend funds
They ensure stable campaign performance and auction participation
Wallet balance must be sufficient to cover all active campaign reserves