Manual CPC on an Ad Grant means accepting the $2.00 bid cap, which means losing most auctions worth winning. The default advice is to move off it, and the default advice is right. There are three situations where it is still the correct choice, and one where it is the only honest one.
The cost of staying manual
Every search is an auction, and commercial advertisers routinely bid well above $2.00 on high-intent terms. A manual grant account loses those silently — no error, no notification, just impressions that never happen.
The visible symptom is an account that spends a fraction of $10,000 and ranks only for oddly specific long-tail phrases. Those are the auctions cheap enough for $2.00 to win. The full picture is in why most grants never spend past $2,000.
The cap applies to manual bidding only. Smart Bidding strategies — Maximize Conversions, Target CPA, Target ROAS — are exempt, and this is documented Google policy rather than a workaround.
When manual CPC is genuinely right
1. There is no conversion tracking, and there cannot be yet
Smart Bidding optimises toward conversions. With none recorded, it has nothing to learn from and will bid conservatively while producing worse results than a considered manual bid.
If the organisation has no analytics access, or donations happen entirely offline, or nobody can add a tag to the site this quarter — stay manual until that changes. Switching first is the most common reason a bid strategy change "did not work". Fix the tracking and the question answers itself.
2. Tracking exists but counts the wrong things
Worse than no tracking is tracking that fires on pageviews. Smart Bidding will faithfully buy more of whatever you told it to count, efficiently and at scale. Manual bidding at least fails neutrally. Clean the conversion actions first, then switch.
3. A brand-only campaign
Campaigns bidding solely on your own organisation's name behave differently. The auctions are cheap, you win them at low bids anyway, and there is little for a bid model to optimise. Manual CPC here is fine and costs nothing. It is also the one place where mixing strategies across campaigns makes obvious sense — which Google fully allows.
4. A deliberate, time-boxed test
Occasionally it is worth holding one campaign on manual as a control while another runs Smart Bidding, to give a sceptical board a like-for-like comparison. Legitimate, provided it is time-boxed and the campaigns are genuinely comparable.
Setting manual bids properly if you must
Most manual grant accounts have every keyword at $2.00, which is lazy and slightly harmful.
- Bid $2.00 only where you have a real chance — long-tail, specific, low-competition terms.
- Bid lower on terms you win comfortably. There is no prize for overpaying.
- For terms where the first-page estimate is $6, accept that you will rarely show. Either leave them for a future Smart Bidding switch, or pause them so they stop dragging click-through rate with impressions nobody clicks.
- Turn Enhanced CPC off if it is on. It muddies a manual test without delivering Smart Bidding's benefits.
The honest framing
Manual CPC is not a bidding strategy on a grant account. It is a holding position while something else gets fixed — usually tracking. The useful question is not "manual or smart" but "what has to be true before we can switch", and the answer is almost always conversion tracking that records actions the organisation genuinely cares about.
Once that exists, Maximize Conversions is the right default and the cap stops mattering.