Payments for Nanny Agencies: What Stripe, Square, and the Big Processors Actually Cost You

The short version: nanny agencies run three payment types — per-booking card charges, five-figure placement fees, and corporate contracts — and each wants a different rail. Date-night bookings ride cards fine; a $8,500 placement fee on a card costs ~$290 in fees versus $5 on ACH (0.8% capped at $5); corporate backup-care contracts belong on ACH or invoicing, never cards. The second leak: placement-fee installments tracked on memory. Rates checked October 2026. Also see Nanny Services, AI for Nanny Services, and Tech for Nanny Services.

The fee table: three payment types, three different answers

Nanny agencies don't have one ticket size — they have three businesses. Math per transaction, rates checked October 2026:

• $150 date-night booking (card, online/keyed): Stripe (2.9% + $0.30) = $4.65. Square (2.9% + $0.30) = $4.65. ACH (0.8%) = $1.20. Cards are fine here — the convenience beats the $3.45 saving, and parents expect to pay by card for a Saturday night.
• $8,500 placement fee, first installment $4,250: card (2.9% + $0.30) on $4,250 = $123.55; full fee on card = $246.80. ACH = $5.00 (capped). Save ~$242 per placement. Never take a placement fee on a card if ACH is an option.
• $5,000/month corporate backup-care contract: card = $145.30/month. ACH = $5.00. Save $140/month per corporate client — $1,680/year each.
• $600/week recurring nanny schedule (agency-collected): card-on-file (3.4% + $0.30) = $20.70/week. ACH = $4.80. Save ~$830/year per family.

The pattern: under ~$500, cards are fine — speed and parent expectations win. Over $1,000, ACH is mandatory — the fee table isn't close. An agency doing 10 placements a year at $8,500 saves ~$2,420 annually just by routing placement fees to ACH. Put the payment method in the placement agreement itself: "placement fees payable by bank transfer" — decided once, saved forever.

The killer angle: placement-fee installments on memory

The placement fee is your biggest single invoice — and the most likely to be tracked on memory. Standard structure: 50% on signing, 50% on the nanny's start date (or 30 days in), sometimes with a replacement guarantee window. What goes wrong: the second installment has no invoice, no due date in any system, and the coordinator who placed the nanny is busy placing the next one. Three months later someone notices. The fix is boring and total: every placement agreement generates its installment invoices on signing — installment one due immediately (before the start date; it's your only leverage), installment two with a real due date, both with payment links, both with automated reminders. Same for the replacement guarantee: if your agreement promises a free replacement within 90 days, the system should know the guarantee expiry per placement — otherwise you're honoring guarantees that expired in March. Corporate backup-care contracts get the same treatment: monthly invoices on the 1st, ACH autopay as the default, late fees after 15 days. A corporate client paying $5,000/month that's 45 days late is a $7,500 hole; automation doesn't get embarrassed about reminding a CFO.

The workflow checklist the big processors fail

• Split payment methods by transaction type: cards for bookings under $500, ACH for placement fees and corporate contracts. No generic processor routes by invoice type automatically — your agreements and your platform do.
• Placement installments with contingencies: second installment tied to the start date actually happening; replacement-guarantee credits if the placement fails. This is contract logic, not charge logic.
• Sitter payouts from verified hours: if the agency collects and pays sitters, payouts must come from geofenced, verified check-in/out hours — not from the booking request. The payout workflow is half the payments story.
• Corporate invoicing with POs: backup-care contracts often require purchase orders, monthly reporting (utilization by employee), and net-30 terms. Consumer card rails don't do POs.
• Failed-payment dunning before the booking: a date-night booking with a failed card must resolve before the sitter arrives — the retry window is hours, and the fallback is rebooking, not chasing.

Stripe, Square, Adyen, Chase, Fiserv, Global Payments, and Worldpay move money; the agency logic — installments, guarantees, sitter payouts, corporate POs — lives in agency software (see our tech guide) or in systems you build. Don't ask a processor to be your contracts department.

The honest verdict on each processor

Stripe: the best fit of the big names for agencies — strong invoicing, good for booking charges (2.9% + $0.30), and ACH at 0.8% capped at $5 for the big money. Use Stripe for bookings on cards and placement fees on ACH and you've got the whole business covered cheaply.

Square: fine for in-person booking payments and the occasional front-desk charge (2.6% + $0.15). Its invoicing works for placement installments in a pinch. The 3.5% + $0.15 card-on-file rate makes it the wrong choice for recurring weekly schedules — and the aggregated-risk holds can freeze a batch of placement installments, which is not a phone call you want to make to a family.

Adyen: enterprise, quote-based. An agency will never need it.

Chase Payment Solutions, Fiserv (Clover), Global Payments, Worldpay: quote-based, ISO-sold, nothing agency-specific. The one case for talking to them: multi-location agencies with real volume who want interchange-plus pricing on the card bookings. Bring the fee table.

Platform-bundled processing (Aaniie, Enginehire): where agency software handles payments, the booking-to-payout link is the value — verified hours in, sitter payouts and family charges out. Get the card and ACH rates separately in writing, and confirm who eats the fee on sitter payouts (you or the sitter — it matters).

How a nanny agency actually wires this up: notes from Finix's public docs

Agencies that outgrow platform billing — multi-location, corporate contracts, real volume — own the payments layer. Finix's public docs (docs.finix.com) fit the three-business problem. Subscriptions with recurring card and recurring ACH in the US: weekly family schedules on ACH (the $830/year-per-family saving), corporate backup-care contracts on monthly ACH. Fixed-length intervals model placement-fee installment plans that end after N payments without a cancellation flow; discount phases handle the "second year retainer at a reduced rate" structures; billing-cycle-day aligns every corporate client to the 1st. Failures: smart retry logic plus network tokens and account updater for the stored cards on bookings — a failed date-night card retried and cleared before 7pm is a saved booking. No-code from the Finix Dashboard or via API. For the big spoken checks — the $8,500 placement fee at the kitchen table — ClaroPro's voice-to-invoice flow from our AI guide turns the agreement into a payment link before the family interview ends.

FAQ

What's the cheapest way to take a placement fee? ACH bank transfer: 0.8% capped at $5. On an $8,500 placement fee that's $5 versus ~$247 on a card. Write "payable by bank transfer" into the placement agreement.

Should date-night bookings be card or ACH? Card — parents expect it, the amounts are small ($100–$200), and the $3–$5 fee buys instant confirmation. Save ACH for anything over $1,000.

How do I stop placement installments from slipping? Generate all installment invoices at signing with real due dates, first installment due before the start date, automated reminders on each. The agreement creates the invoices; memory creates the write-offs.

Who pays the fee on sitter payouts? Decide explicitly and put it in the sitter agreement — the agency absorbing payout fees is a cost of doing business; passing them to sitters is a retention risk. Either way, decide once, in writing.

The move, in order: 1) cards for bookings, ACH for everything over $1,000 — make it the default in your agreements. 2) placement-fee installments invoiced with due dates, first installment before the start date. 3) autopay for recurring weekly schedules. 4) then negotiate the processor. Then read Tech for Nanny Services — the agency platform you pick determines which of these are automatic and which are your evenings.