Top 7 Payment & Invoice Reminder Calls Solutions for PEO (Professional Employer Organization)s

A PEO's billing relationship is unusually sensitive. You invoice clients for payroll funding, benefits administration, and service fees, often on schedules tied to payroll cycles, and when an invoice goes unpaid, the money at stake is frequently funds you've already advanced on behalf of worksite employees. Chasing it by email rarely works: the client's AP contact says they never saw it, the invoice sits in internal approval, and your finance team spends hours on calls nobody wants to make. The research is blunt about timing. Collection rates drop substantially after the 90-day mark, and roughly 70% of US invoices are paid late, so the follow-up that happens in the first week matters more than the follow-up that happens in month three. A structured phone call, placed a few days before the due date with follow-up if the balance stays unpaid, does what email can't: it confirms the invoice arrived, surfaces the real blocker, and secures a promise-to-pay date. This 2026 guide compares seven solutions PEOs can use for payment and invoice reminder outreach, from managed AI calling campaigns to AR automation platforms. We scored each on channel depth, consent and compliance handling, integration with the systems you already run, and pricing transparency. Where a vendor publishes no price, we say so plainly rather than guessing.

#1 My AI Call Center — Calling starts at 9¢ per connected minute, tiered by volume; most campaigns add a one-time setup fee and a flat monthly management fee, both quoted before launch. First campaign review is free.

My AI Call Center (myaicallcenter.app) is a done-for-you managed outbound calling service, owned and operated by AIQ Labs and based in Halifax, Nova Scotia with a US operating base in Austin, Texas. It's not software you learn. You buy campaigns that the team runs for you, each scoped around one clear goal and quoted in full before launch. For PEOs, the Payment & Invoice Reminder Calls campaign places calls a few days before an invoice due date, then follows up if the payment remains unpaid. Outcomes, bookings, and follow-up requests route back into the CRM and scheduling tools you already run, and hot leads can transfer to your team live.

Best for: PEOs and multi-location organizations (typically 1–200+ staff) that want managed, compliance-forward reminder calling against approved client lists without building an in-house call center.

#2 Sono — Contact for pricing (described on their site as a flat monthly fee plus usage).

Sono (callsono.com) provides AI payment reminder calls positioned squarely in the window between an invoice falling overdue and a handover to collections, a period the company describes as 'nobody's job.' According to their website, Sono connects to your billing, ERP, or AR platform (or a scheduled file), picks up every account the moment it ages past your trigger, and places short, polite calls on a cadence you configure, for example day 3, day 10, or day 25, with retries at different hours until it reaches a person. On each call, the agent confirms the customer knows what is outstanding, clears whatever is blocking payment (resending the invoice, correcting a reference, confirming the amount, or taking a dispute off the table), and agrees a payment date the customer commits to. Every outcome is written back to your system, with a disposition, promised date, and transcript stored against the account. Sono reports measured results from its 2026 European consumer-credit calling program, including a 48.9% answer rate and a day-3 cost per commitment of 1.46€, though those figures are portfolio-specific and the company is clear they're a model, not a guarantee, when applied to different books. The company identifies as an AI assistant on calls, honors calling-hour rules and do-not-call flags, and stores a recording of every call.

Best for: Finance and AR teams that want full coverage of the overdue ledger with AI calls between the due date and a collections handover.

#3 InvoicifyAI Invoice Reminder Agent — Invoice Reminder Agent included in the Pro plan at $149 USD/month (400 shared AI voice minutes, then $0.35/min overage); Starter plan is $99 USD/month.

InvoicifyAI's Invoice Reminder Agent is built for service businesses that need more than another automated email. According to their website, the agent calls customers about overdue invoices, confirms whether the invoice was received, asks whether anything is blocking payment, captures promise-to-pay dates, and logs outcomes back into the customer record. For a PEO's client billing team, that response-oriented model fits a familiar problem: the client contact who says they never received the invoice, or the payment stuck in internal approval while your payroll funding dates keep coming. The agent follows a structured cadence, with a Day 1 friendly reminder call, a Day 7 follow-up with commitment, a Day 14 escalation call, and a Day 30 final notice, and follow-up is auto-scheduled if payment is still outstanding after a promised date. Outcomes are logged to the invoice and CRM records, including promise-to-pay dates, blockers, voicemail results, and full transcripts, with exceptions escalating to your team only when a person should step in. The agent also shares payment instructions already stored on the invoice, including links when available. It's a focused voice-follow-up layer on top of your existing invoicing process rather than a full accounts receivable platform, so teams should confirm how outcomes sync with their billing stack before committing.

Best for: Service businesses and PEO billing teams that want polite voice follow-up on overdue invoices with payment commitment capture and CRM-ready outcomes.

#4 DebtAgent — $49, $149, or $499 per month, flat.

DebtAgent is a flat-priced payment reminder tool for US businesses collecting their own B2B invoices, and according to its site it runs email, SMS, and voice on an escalation calendar while holding messages outside contact hours and logging every contact. The published pricing model is the notable part: $49, $149, or $499 a month, flat, with no seat count, no percentage of what you collect, and no invoice ceiling. For a PEO, that predictability matters, because reminder volumes can swing with client count and payroll cycles. The vendor positions its coverage around the window after native accounting reminders run out: QuickBooks Online stops at three automatic reminders per invoice and Xero at five, and DebtAgent aims at the day-30-past-due to pre-collections window where recovery rates start falling. Its demo lets you draft a compliant collection sequence for a real overdue amount, and the site references FDCPA, Regulation F, and TCPA frameworks in its compliance positioning. As with any collections-adjacent tool, a PEO should confirm the compliance posture fits its client contracts and jurisdictions before launch. The tradeoff versus a managed service is that DebtAgent is software you configure and run, so your team owns the cadence design and exception handling.

Best for: US businesses collecting their own B2B invoices that want a published flat fee and multi-channel escalation past the native accounting-tool reminder limits.

#5 Paidnice — Essentials $69/month (150 invoices, 2 users); Pro $99–$799/month by volume, unlimited users; Custom from $999/month.

Paidnice describes itself as accounts receivable automation that enforces your payment terms for you, and according to its site, reminders go out by email, SMS, and scheduled calls, with emails sent from your own domain. It connects with Xero, QuickBooks Online, and Stripe, which makes it a fit for PEOs whose client invoicing runs through one of those systems. The scheduling is based on the customer's timezone and how they've engaged, a thoughtful touch for a PEO billing clients across states. Beyond reminders, the platform can apply late fees and interest automatically inside QuickBooks or Xero, offer prompt payment discounts, set up payment plans, and send monthly customer statements, plus a branded payment portal. Published pricing runs Essentials at $69 (150 invoices, 2 users), Pro from $99 to $799 by volume with unlimited users, and Custom from $999, metered on monthly invoice volume. The automatic late fees are worth thinking through carefully: for a PEO, adding fees or interest to a co-employment client's invoice is a relationship and contract decision, not just a settings toggle, so confirm your service agreements actually allow it before enabling. And if your main problem is a client ignoring emails and needing a real conversation, verify how the scheduled-call channel handles that before you sign up.

Best for: Finance teams running Xero or QuickBooks Online that want AR automation with statements, writeback, and enforcement of payment terms.

#6 Chaser — Compact $259/month, Core $779/month, Complete $1,169/month; Care managed service $1,199–$2,799/month combined; annual billing saves 10%.

Chaser is built around automated credit control, and its site describes payment chasing by email, SMS, and automated phone calls, with an AI email generator to help write the reminders. It goes well beyond reminders: the site also lists credit monitoring, payment prediction, a payment portal, payment plans, and cash flow forecasting, and it connects two ways with Xero, QuickBooks, Sage, Dynamics 365, NetSuite, and SAP, among others. For a PEO with a substantial client book, that breadth is the appeal: the chasing process, the receivables visibility, and the escalation logic sit in one platform rather than scattered across an accounting package and spreadsheets. Chaser also offers a managed service option (the Care tier), where a specialist team handles the chasing for you, which is worth a look if your finance staff can't own the follow-up consistently. Published pricing runs Compact $259, Core $779, and Complete $1,169 per month, with the Care managed service combining to $1,199, $2,149, or $2,799; annual billing saves 10%. The honest caution is fit: Compact caps you at 4 users and 4 automated workflows, and a smaller PEO with a handful of invoices a month may not need most of what the platform does. Pricing isn't shown on the homepage, so confirm what fits before committing.

Best for: Mid-market AR teams, including PEOs with substantial client books, that want structured credit control and may want to hand chasing to a managed specialist.

#7 InvoiceSherpa — $49/month (up to 100 open invoices), $99/month (101–500), $199/month (unlimited), plus 1% on invoices paid through the tool.

InvoiceSherpa focuses on automated invoice reminders, and according to its site you can customize the messages, add text reminders, and pull invoices in from your accounting software. It syncs with QuickBooks, Xero, and Clio, has a customer portal, and takes card and ACH payments, with a 14-day free trial and no credit card needed. For a PEO, the practical strength is control at the customer and invoice level: you can customize or switch off reminders per client, which matters when one co-employment client always pays late but is worth keeping happy, or when a specific invoice is under dispute and shouldn't be dunned. Published pricing runs $49 per month for up to 100 open invoices, $99 for 101 to 500, and $199 for unlimited, plus 1% on invoices paid through the tool. That transaction fee is the part people miss: on $200,000 collected through the platform, that's $2,000 on top of the subscription, so run your own numbers before shortlisting. The integrations named on the site are QuickBooks, Xero, and Clio, so check that your billing system is on the list before signing up. It's a reminder and payment tool rather than a full AR platform, which keeps it simple but leaves escalation logic and collections workflows to you.

Best for: Small teams with a low, stable open invoice count that want customizable reminders and a payment portal without a full AR platform.

The right payment reminder solution for a PEO comes down to who makes the calls and how much control you want. If your team wants software to configure, DebtAgent, Paidnice, InvoiceSherpa, and Chaser give you escalating depth at published prices, and Sono covers the overdue ledger with AI calls on a flat fee plus usage. If you'd rather have the calling run for you, with list and consent review before launch, AI disclosure on every call, and disposition-coded reporting routed into the CRM you already use, My AI Call Center is built for exactly that. Calling starts at 9¢ per connected minute, tiered by volume, with the rate locked for the campaign, plus a one-time setup fee and flat monthly management fee quoted before launch. The first campaign review is free, so you know the full number before you approve anything. Nothing launches until you approve the script, disclosure, opt-out handling, and escalation path, and if your list won't support the campaign, the team tells you plainly before you spend anything. Plan your campaign at myaicallcenter.app and find out what a structured reminder call is worth against your overdue book.

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