Invoicing software charges you in three separate places: a monthly subscription, a meter that counts something you do (invoices, clients, users, or a percentage of what you collect), and the processing fee on each payment. The subscription is the one you agreed to. The meter is the one that quietly grows with your business — and it’s the reason your bill went up in a month when nothing about your plan changed.
If you’ve ever looked at an invoicing bill and thought “I didn’t upgrade anything,” this is why. Below: what each fee actually is, what the three of them come to at 100 invoices a month, and the four questions worth asking before you move.
Fee one: the subscription
The number on the pricing page. It’s the honest one — you saw it, you agreed to it, it shows up on the same day every month. Two things to watch. First, tiers move: QuickBooks users reported increases in the 15–25% range heading into 2026, and FreshBooks raised prices twice in roughly a year. Second, what a tier includes moves too. Wave put reminders, recurring billing, and bank feeds behind a paid tier in 2024, which turned a free plan into a paid one for anyone who relied on those.
A subscription increase is annoying but legible. You can see it, plan for it, and leave. The next one is harder to see.
Fee two: the meter
Somewhere in the plan, something is counted. The four common meters:
- Percentage of invoice volume. A cut of everything you collect through the tool, charged on top of processing. Stripe Invoicing works this way, at 0.4% of paid invoice volume on its starter tier and 0.5% on the tier above it.
- Per invoice. A few cents to a dollar each. Harmless at 20 invoices, a line item at 400.
- Client count. FreshBooks tiers on how many billable clients you have — roughly $23/month at 5 clients up to $43/month at 50, as published. Growth in clients, not revenue, is what moves you up.
- Per user. Bill.com runs per-user in the $45–89 range, plus per-transaction fees. FreshBooks charges around $11/month per additional seat. This one has a nasty second-order effect: it makes you ration logins, so the office manager shares a password and your audit trail becomes fiction.
Every meter has the same property: the better your month, the bigger your bill. You are, in a precise sense, paying a tax on your own growth.
The math at 100 invoices a month
Take a service business sending 100 invoices a month averaging $400 — $40,000 collected. Software fees only; processing is separate and comes next.
| Tool | What meters | Software cost |
|---|---|---|
| Stripe Invoicing | % of paid invoice volume | ~$160/mo at 0.4% |
| Bill.com | Users + per transaction | $45–89 per user, plus transactions |
| FreshBooks | Client count + seats | ~$43/mo at 50 clients, +$11 per extra seat |
| QuickBooks | Plan tier | Varies; 15–25% increases reported for 2026 |
| Collect | Nothing | $59/mo flat |
Competitor figures are published list rates gathered in July 2026 and they change often — treat them as a starting point and confirm current pricing before you switch. Collect’s figure is our own and is exact.
The interesting part isn’t the gap at $40,000. It’s what happens at $80,000: the percentage line doubles to roughly $320, the per-user line grows as you hire, the client-count line pushes you up a tier — and the flat line is still $59. Run your own numbers, because at low volume the percentage plans genuinely win. At $5,000 of small invoices, 0.4% is about $20. The question is never which is cheaper today; it’s where your crossover sits and which side of it you’re heading toward.
Fee three: processing
The cut taken when money actually moves. Everybody pays this, including us, and it is not a software fee — it’s the cost of accepting a card or an ACH debit. It deserves its own scrutiny, because the headline rate you were quoted is rarely the rate you end up paying once downgrades, assessments, and monthly line items land. We wrote that one up separately: what you actually pay to accept a card.
The point for this page: compare the software fee and the processing rate as two different numbers. A cheap subscription sitting on an uncompetitive processing rate is not a cheap platform, and the reverse is just as true.
Collect is the flat line in that table.
Collect doesn’t meter anything. Starter is $25/month, Pro is $59, Premium is $119 — flat, never a percentage of what you collect and never a per-invoice cut. Send 40 invoices or 400, add clients, add users on Premium: the software bill is the same number. Reminders and recurring billing sit in the cheapest paid tier on purpose, because paywalling the thing that gets you paid is the practice this whole page is complaining about. E-Sign is a $25/month add-on, first three signed documents free.
The catch, stated plainly, because a fees page that hid it would be worthless: Collect runs on card and ACH processing through the Optimize Gateway, typically via Sway. That relationship is why the software is priced the way it is, and for some merchants it’s bundled in entirely. Your processing rates are quoted up front and land in your own merchant account. If you want the software but not the processing, we’re the wrong fit and we’ll say so on the call.
Four questions before you switch
- What is metered, and what happens when that number doubles? Make them answer in dollars, not adjectives. If nothing is metered, ask what stops them adding a meter later.
- Which features are gated above my tier? Specifically automatic reminders and recurring billing. If the tool that’s supposed to collect your money charges extra to chase it, you’ve found the upsell.
- What’s the processing rate, and whose merchant account does the money land in? Your own account, with rates quoted up front, is the answer you want.
- What does leaving cost? Can you export clients, invoice history, and payment records in a usable format? A platform that’s hard to leave never has to compete for you again.
If chasing the money is the actual problem rather than the price of the tool, start with what chasing late invoices costs you. And if you’re on QuickBooks and hitting walls on autopay, the specific limits are documented in every QuickBooks Autopay limit that blocks you.
Common questions
Why does my invoicing bill go up when I have a good month?
Because something in your plan is metered. The common meters are a percentage of invoice volume, a per-invoice charge, a cap on how many clients you can have, and a per-user seat price. A good month adds invoices, clients, or volume, so the meter turns and the bill follows. A flat monthly plan is the only structure where a better month costs the same as a slow one.
Is a percentage-based invoicing fee ever cheaper than a flat subscription?
Yes, at low volume. A fee of 0.4% of paid invoice volume costs about $20 a month on $5,000 of small invoices, which beats most flat plans. The crossover comes fast: at $40,000 collected that same 0.4% is $160 a month, and at $80,000 it’s $320, while a flat plan hasn’t moved. Work out your own crossover point before you assume percentage pricing is the cheap option.
Do I still pay card processing fees on a flat-rate invoicing plan?
Yes. Processing is a separate fee paid to whoever moves the money, and every platform has it in some form — it’s the cost of accepting a card or an ACH debit, not the cost of the software. When you compare tools, compare the software fee and the processing rate separately, because a low subscription can sit on top of an uncompetitive processing rate and vice versa.
What should I ask a vendor before switching invoicing software?
Ask four questions: what is metered and what happens to the price when that number doubles; which features are gated behind a higher tier, specifically reminders and recurring billing; what the processing rate is and whose merchant account it lands in; and what it costs to leave, including whether you can export your client list and invoice history. The answers matter more than the headline monthly price.