Payments for Pressure Washing: What Stripe, Square, and the Big Processors Actually Cost You

Pressure washing money is driveway money: the $350 house wash paid by card before the truck leaves, the $150 driveway-only, the $2,000 fleet contract. This is the rare trade where card-present is the default — and the fee math favors whoever actually uses the reader instead of texting an online invoice. Below: what each big processor actually costs you at your real ticket sizes. Pair with AI for pressure washing for the quote-speed math.

The fee table, at your ticket sizes

Published 2026 rates, verified October 2026:

• $350 house wash, card-present: Square 2.6% + $0.15 = $9.25. Stripe in-person 2.7% + $0.05 = $9.50. Interchange-plus ≈ $7.80.
• $350 house wash, online invoice instead: Stripe 2.9% + $0.30 = $10.45. Square online = $10.45. Texting the link instead of tapping the reader costs an extra $1.20 a job — $480 a year on 400 jobs, for nothing.
• $150 driveway-only, card-present: Square = $4.05. Stripe in-person = $4.10. Interchange-plus ≈ $3.40.
• $2,000 fleet contract, monthly invoice: Stripe online = $58.30. Interchange-plus ≈ $44.10. ACH = $5.00. The fleet contract belongs on ACH.

The annual math: 400 jobs at $350 average = $140,000. Card-present at Square's rate: $3,700/year. The same jobs as online invoices at Stripe: $4,180. Interchange-plus card-present: about $3,120. The difference between the laziest option (online links) and the smartest (interchange-plus, reader in hand) is $1,060 a year — and that assumes you never run a fleet contract on a card, which would be the real donation.

The workflow checklist the big processors fail

• Card-present at completion. The reader on the operator's phone, tapped before the truck leaves. 2.6–2.7% in person vs. 2.9–3.5% online — on a $350 ticket that's $1.20–$3.00 a job, and the customer pays while looking at the clean driveway, which is also when they're happiest.
• Text-to-pay as the backup, not the default. The customer who "left the wallet inside" gets the link by text — fine as an exception, expensive as a habit. Every online invoice is a card-present discount you're donating.
• Deposits on commercial flatwork. The $2,000–$5,000 commercial job gets 50% down before the rig rolls — same-day payment link, deposit clears, schedule holds. A processor that holds large first transactions breaks this.
• ACH for fleet contracts. Monthly fleet billing on ACH at 0.8% capped at $5 — the $2,000 monthly contract costs $5 instead of $44–$58. Fleet managers expect ACH anyway.
• Card-on-file for the annual plan. The shops selling annual house-wash plans bill like a route business — tokenized card, auto-charged yearly, priced at interchange-plus.
• Weather-day no-charge handling. The rescheduled job shouldn't create a duplicate charge or a confused customer — the payment layer needs void-and-rebill that the office can do in one click, not a support ticket.

Flat-rate vs interchange-plus, at pressure-washing volumes

Pressure washing is the trade where the flat-rate debate has a twist: the method matters more than the rate. The $1.20-a-job gap between card-present and online-invoice at the same processor is bigger than the gap between Stripe and Square at card-present ($0.25). Translation: the operator who taps the reader beats the operator with the better rate who texts links. Get the method right first, then the rate. On the rate itself, interchange-plus wins at both ends: $7.80 vs $9.25–$9.50 on the $350 wash, $44.10 vs $58.30 on the $2,000 fleet invoice. The fleet contract is where flat-rate's percentage punishment shows — 2.9% of $2,000 is $58, and there's no reason to pay it when ACH is $5. One more wrinkle unique to this trade: the seasonal volume curve. A shop doing 80% of its revenue in six months should not be on a processor with monthly minimums — price the dead months, not just the busy ones.

The honest verdict, processor by processor

• Square: the natural fit for this trade — the reader ecosystem is the best of the big names, 2.6% + $0.15 in person is competitive, and the solo operator can be taking cards today. The catch: the moment you add online invoices, fleet billing, or card-on-file plans, you're paying 2.9–3.5% and the aggregated-risk model is watching your seasonal spikes.
• Stripe: 2.7% + $0.05 in person is fine; 2.9% online is fine. Nothing about Stripe understands a driveway — it's infrastructure waiting for a developer, and most pressure washing shops don't have one.
• Adyen: interchange-plus, enterprise implementation. Right rate shape, comical overkill for a wash rig.
• Chase Payment Solutions, Fiserv, Global Payments, Worldpay: quote-based, sales-led, zero driveway thinking. If you go this route, get the card-present rate, the online rate, monthly minimums, and the equipment cost in writing.
• Finix (via your own payments setup): interchange-plus card-present through your own reader setup, payment links for the text backup, ACH for fleet. Finix lets the method and the rate both be right — reader in hand at interchange-plus, not a flat rate punishing the $2,000 invoice.

The driveway payments stack: the Finix playbook

The driveway payments stack: 1) reader on the operator's phone — card-present as the default, not the aspiration; 2) text-to-pay link as the backup for the wallet-left-inside customer; 3) 50% deposits via payment link on commercial work before the rig rolls; 4) fleet contracts on ACH. Finix's public docs (docs.finix.com) cover the building blocks — in-person payments, payment links, tokenized card-on-file, ACH — that make this one coherent system instead of four disconnected tools. The same-day invoice from a voice note (speak the job, AI builds it from the square-foot price book, the link texts itself before the driveway dries) is ClaroPro's workflow. And the before/after photo belongs on the receipt — the customer who just watched their driveway transform is the customer most likely to tap "pay now" and leave five stars in the same minute. Rates checked October 2026.

What to watch for

Watch for: reader compatibility — the $49 reader that only works with one processor's app is a lock-in device, not a tool; keyed-in rates (3.5% + $0.15 at Square) when the reader fails and the operator types the number — have a backup reader, not a backup rate; monthly minimums punishing the winter; contract terms with early-termination fees on the quote-based processors; and the "free" POS trap — the free tablet-and-stand bundle that locks your processing at 2.9%+ is the most expensive free hardware in the trade. The parent guide for this trade is pressure washing; the software side is tech for pressure washing.

Card-present at the driveway, interchange-plus behind it, deposits on the commercial work. The job is done in hours — the payment should be too.