The Budget step takes one number: the campaign's daily budget.
Work backwards from what you want out:
Decide the conversions per day you're aiming for.
Multiply by your target CPA.
That's the daily budget that goal implies.
Example: 2 leads/day × $50 target CPA = $100/day.
If you're starting without conversion history, fund the learning period honestly - a budget too small to buy meaningful clicks per day just stretches the learning phase out.
RELATED ARTICLES
Bid strategies
tCPA, tROAS, Maximize Clicks and Enhanced CPC - which and when.
Launching the campaign
Validated, pushed, created paused - you flip the switch.