Retainer scope creep doesn't look like one big ask — it looks like a dozen small ones that never get repriced. MarginFlow catches them as they land.
Retainers are especially vulnerable to scope creep because there's no single invoice moment that forces a scope review — the work just keeps expanding.
A retainer scoped for SEO picks up 'can you also just post this on our socials' requests, one client email at a time, until it's a second job with no second invoice.
The plan covers 4 blog posts a month. A client asking for 'one more, it's urgent' seems small each time — and adds up to a fifth of your monthly output, unbilled.
Monthly reports turn into ad-hoc strategy calls turn into 'can you just look at our competitor's site' — real work that was never part of the retainer line item.
'Can you also run our Google Ads' arrives mid-retainer. It gets picked up to keep the relationship smooth, without a corresponding scope or price change.
See the full mechanics on the how it works page, or read how design agencies handle revision creep.