What makes invoice collection software worth paying for
There's no shortage of tools that claim to automate your accounts receivable. Most of them are glorified email schedulers. The ones worth paying for do three things: they send SMS (not just email), they include one-click payment links in every reminder, and they escalate to voice calls for invoices that go past 14 days. Email open rates for invoice reminders hover around 20%. SMS open rates are over 95%. If your collection tool doesn't text, it's leaving most of your money on the table.
Why contractors have unique needs that generic AR tools miss
Enterprise AR platforms like Billtrust and Esker are built for Fortune 500 billing departments. They have minimum contracts, implementation fees, and feature sets designed for companies with a dedicated AR team. For a 10-person HVAC shop running 150 invoices a month, that's overkill and overpriced.
Contractors need tools that sync with QuickBooks (where most invoices already live), handle the informal customer relationships that are normal in field service, and let the owner or office manager run the entire thing without IT support. Protected lists matter — you can't have a tool that calls your biggest, most loyal customer when they're two weeks late due to a billing hiccup.
The top options compared
Invoiced and FreshBooks both have automated reminder features, but they're email-only and lack voice follow-up. Resolve and Chaser are solid for B2B, but their pricing and setup complexity make them overkill for most contractors. Collect.AI has strong AI but is enterprise-focused with long onboarding.
Surety is built specifically for service businesses and contractors. It syncs with QuickBooks, sends SMS reminders with Stripe payment links, and deploys Remi — an AI voice agent — for calls on invoices that go past two weeks. It's the only tool in this category with an AI voice follow-up included at the base tier. Pricing is 12% of what gets collected (free to start), then flat $149/month after 10 customers.
The QuickBooks integration question
For contractors already using QuickBooks, the integration question is critical. You don't want to re-enter every invoice. The best tools pull overdue invoices directly from your QB account — customer name, amount, phone number — and start the reminder sequence automatically.
Surety's QuickBooks sync is one of the deepest in the space. It reads your overdue invoices in real time, matches customer records to phone numbers, and marks invoices as paid in QB when payment comes in through Stripe. The alternative is a CSV upload — less seamless, but functional if you're not on QuickBooks.
What to ask before buying any collection software
Before you sign up, ask: Does it send SMS, not just email? Does every reminder include a payment link? Is there voice follow-up for older invoices? Does it sync with your accounting system? Can I exclude specific customers? Is there an attribution dashboard so I can see what the tool actually caused vs. what would have paid anyway?
If a tool can't answer yes to all of these, it's a partial solution. Surety answers yes to all six. The 14-day money-back guarantee means you can test it on your real invoice backlog before committing.