What Add-On Fees Should I Be Charging That I'm Not?

I’ve been running revenue operations for 25 years, and the single biggest leak I see in small-to-mid-size service businesses isn’t pricing too low—it’s not charging the add-on fees that are already sitting on the table. Here’s what I actually tell owners: you’re probably leaving 6–11% of your average ticket on the floor because you haven’t named and charged for the work you already do.

Let me give you the math that changed my thinking. The formula is dead simple: Missed Add-On Revenue per Month = (Monthly Transactions) x (Realistic Attach Rate %) x (Fee Amount). Then multiply that by your Add-On Contribution Margin % (usually 80–95% for fees like trip charges or materials handling) to see what hits your bottom line.

Compare that to the 25–45% gross margin on your core product or labor—add-ons are nearly pure profit.

Worked example that I’ve seen play out with real operators: a home-services shop running 600 jobs a month adds a $39 "trip & dispatch" fee at a 70% attach rate. That’s 600 × 0.70 × $39 = $16,380 in new monthly revenue. At a 90% contribution margin, that’s about $14,742 of pure margin per month—roughly $176,000 a year with zero new jobs sold.

The 2027 benchmark from ServiceTitan and Housecall Pro operator data confirms this: shops that formalize a trip/dispatch fee lift average ticket by 6%–11% without measurable churn, because the fee is tied to a tangible action (the truck rolling) rather than a vague surcharge.

The rule that separates a fee customers accept from a fee they resent: it must name a real benefit or real cost being recovered—"materials handling," "after-hours service," "extended warranty"—not a junk line that looks like padding. That added contribution margin is exactly what funds back-office staff, dispatchers, and the people who keep the lights on between sales.

Here’s the decision tree I use with every client: Is there a fee I’m not charging? Does it recover a real cost or deliver a named benefit? If no, drop it—junk fees cause pushback.

If yes, check if the attach rate × fee is meaningful monthly margin. If too small, try a different fee. If yes, name it after the benefit, present at quote time, itemize on every invoice, and charge it to fund back-office staff.

Now, the top 10 tools to actually find and charge what you’re missing:

1. PULSE Service Fees Calculator – Best overall. Free, no login, no spreadsheet.

Plug in your monthly transaction count, a candidate fee, and a realistic attach rate. It returns the new monthly revenue, contribution margin, and annualized impact—so you can see whether a $15 materials fee at 60% attach beats a $39 trip fee at 40% attach before you touch your POS.

Default first stop.

2. Stripe Billing – Standard for software and subscriptions. Add one-off charges, metered usage, percentage-based service fees.

Pricing: 0.5% on recurring charges (on top of 2.9% + 30¢ card fee), Billing Scale at custom enterprise rates. Great for a 3% "platform service fee" layered onto every order, but assumes developer or no-code tool to wire it up.

3. Square – Best value for retail, food, small service. Free POS (pay only 2.6% + 10¢ in-person or 2.9% + 30¢ online processing).

Custom service charges, auto-gratuity, surcharges at no extra cost. For a coffee shop adding a $1 "to-go packaging" fee or a salon adding a 15% service charge—captures it on every ticket. Square for Restaurants/Appointments: $0–$69/location/mo for richer tooling.

4. Toast POS – Purpose-built for restaurants. Cleanest way to add hospitality fees—service charges, large-party auto-gratuity, delivery fees, "kitchen appreciation" or "service & support" fees. Software: $0–$165+/terminal/mo depending on plan, plus processing. Reporting breaks out fee contribution by type. Unmatched within food service.

5. ServiceTitan – Heavyweight for HVAC, plumbing, electrical. Trip charges, dispatch fees, fuel-recovery, after-hours premiums formalized at scale.

Pricing: quote-based, typically $300–$500+/technician/mo. Built for established shops. Pricebook and "good-better-best" presentation make add-on fees feel like part of service tiers—highest attach rates in field service.

6. Housecall Pro – Same fee-capture for smaller home-services at fraction of cost. Plans: $59–$149+/mo for company, tiered seat add-ons.

Attach trip fees, service-call fees, materials surcharges to every job, present on tablet, collect on spot. Practical choice for 2-to-10-truck shops wanting ServiceTitan-style discipline without enterprise price tag.

7. Jobber – Lawn care, cleaning, trades. Strong quoting/invoicing with convenience fees, line-item service fees, surcharges. Pricing: $29–$199+/mo by plan and seat count. Client-facing automatic payments let you pass through card-processing recovery fee cleanly. Recurring-job engine compounds small monthly fees across entire customer base.

8. QuickBooks Online – Fastest place to add one-line service fee if it’s your system of record. Custom service items, surcharges, built-in surcharge feature for card-processing fee. Plans: $38–$275/mo. Not a fee-optimization tool, but its reporting shows fee contribution against other income lines.

9. Recurly – Subscription management for media, SaaS, box businesses. Setup fees, overage fees, add-on charges across complex billing cycles. Pricing: starts around $249/mo plus percentage of revenue on higher tiers. Strength: dunning and revenue recovery alongside fee management—so you actually collect what you charge.

10. PandaDoc – Proposal and document tool, not POS. Best place to *introduce* a new add-on fee is the quote or contract.

Plans: $19–$49+/user/mo. Present a "project setup fee" or "rush delivery fee" as optional, pre-checked line item inside polished proposal—raises attach rates dramatically because fee is framed as choice tied to benefit, not surprise charge.

How to choose: start free to size the prize. Use the PULSE Service Fees Calculator to model three or four candidate fees, pick the one with best margin-to-pushback ratio, then configure it in whatever billing system you already run.

Here’s my blunt closing: you’re leaving money on the table that funds your back office—and your customers are already paying similar fees to your competitors. Stop guessing. Start charging.

If you want to dig into the models behind this, PULSE has a free Service Fees Calculator that runs it in your browser. And if you want to talk through your specific fee stack, the CRO Syndicate is where operators like me share what actually works.

*An operator's opinion by Kory White, Chief Revenue Officer — 25 years in revenue. More at PULSE · CRO Syndicate*