NEW BUSINESS VS. EXISTING REVENUE: WHY SMART AGENCIES TRACK BOTH SEPARATELY
A number I ask for on almost every first call: "how much of this year's revenue is from new clients, versus clients you already had?" Most founders can tell me their total revenue instantly. Very few can answer that second question without going and digging for it—and digging is exactly the problem.
Quick answer: total revenue tells you how big your agency is. New-vs-existing revenue tells you why—and whether that size is durable. An agency growing entirely on new logos while quietly losing existing accounts is in a very different position than one growing because existing clients are expanding, even if the total revenue looks identical.
THE SAME TOTAL REVENUE CAN MEAN TWO COMPLETELY DIFFERENT BUSINESSES
Imagine two agencies, both at $2M in revenue, both up 20% from last year.
Agency A grew almost entirely from new client wins, while several existing accounts shrank or churned. Agency B grew mostly by expanding scope with clients they already had, while adding a modest amount of new business on top.
Agency A is running hard just to stand still—replacing lost revenue with new revenue, which is more expensive to win (new business development, pitching, onboarding) than it is to retain. Agency B is compounding: existing relationships getting deeper and more profitable, with new business as genuine growth on top. Same top-line number. Completely different trajectory.
WHY THIS IS HARDER TO TRACK THAN IT SOUNDS
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In theory, tagging revenue as "new" or "existing" in QuickBooks Online or FreshBooks sounds simple. In practice, it's one of the more common gaps we see: these tools aren't built to preserve that kind of custom tag cleanly as a client relationship ages from year one into year two and beyond, so agencies end up building fragile manual trackers just to answer a question their accounting software should make easy.
The fix isn't a more complicated spreadsheet—it's deciding on the definition once (we typically define "existing" as any client retained from the prior period, "new" as anyone signed within the current period) and building your forecasting tool to hold that distinction going forward, rather than reconstructing it after the fact every time someone asks.
WHAT TO ACTUALLY DO WITH THIS NUMBER ONCE YOU HAVE IT
Set separate goals for each. A single "grow revenue 20%" target hides whether that should come from retention, expansion, or new logos. Splitting the goal (e.g., 12% from existing account growth, 8% from new business) makes your pipeline and your account management work toward the same plan instead of competing priorities.
Watch the ratio over time, not just the totals. A healthy, maturing agency usually shows existing revenue as a growing share of the total, not a shrinking one—it's a sign relationships are deepening rather than constantly needing to be replaced.
Connect it to client concentration. If your "existing revenue" is really just one or two accounts carrying the whole category, you don't have retention strength—you have concentration risk wearing a retention costume. More on that in The Client Concentration Problem.
Use it to sanity-check your pipeline. If new business has to carry an increasing share of revenue every year just to hit flat growth, that's a retention problem masquerading as a sales problem—and no amount of extra pipeline fixes a retention issue at the source.
FAQ
Why does new vs. existing revenue matter if total revenue is what pays the bills? Because it tells you how expensive that revenue was to generate. New business typically costs more to win (sales time, pitching, onboarding) than expanding an existing relationship, so the mix affects your real margin, not just your top line.
How do I define "existing" vs. "new" revenue? There's no universal rule—pick a definition and apply it consistently. A common approach: "existing" is any client retained from the prior period; "new" is anyone signed within the current period.
Can QuickBooks or FreshBooks track this automatically? Not cleanly on their own—most agencies need a layer on top (a custom tracker or forecasting tool) to preserve this distinction as client relationships age year over year.
What's a healthy new-vs-existing mix? It depends on your growth stage, but a common warning sign is new business having to make up an ever-larger share of revenue just to hit the same growth number each year—that usually means retention, not new business, is the actual problem to solve.
Building this distinction into your forecasting is a standard part of the custom P&L tool we build for every Le Chéile client.
About the Author: Meredith Fennessy Witts
Founder & Strategic Growth Advisor at Le Chéile and Co-Host of
With a background in financial and operational consulting and a successful track record of founding and scaling her own agency, Meredith brings deep expertise in strategic growth for indie creative and digital agencies.
Her company, Le Chéile, helps agencies scaling toward and beyond 5M+ in revenue to rightsize teams and payroll, increase founder pay, scale offers and packages and more. She helps clients to achieve their goals while clarifying their business strategy and finances.
She is a trusted authority on building mindful, profitable businesses—especially for underserved founders in the women, LGBTQ+, and BIPOC communities.
Beyond Le Chéile, Meredith co-hosts , a podcast for creative agency founders, and its companion . She also runs , a community for fractionals and consultants in the agency space.
View full bio and connect with her on or listen to her podcast, .
