One workflow
Stop juggling tools
Invoices, estimates, payment status, client portal, and reminders all in one place.
Billing software, free to start.
Billing software that handles invoices, estimates, and payments in one place.
Stop juggling invoice templates, payment links, and reminder notes. WaffleInvoice combines billing, estimates, payments, and reminders into one workflow. Free for 25 invoice emails per rolling 30 days. Pro unlocks unlimited sends, online collection, and recurring billing.
WaffleInvoice is billing software for freelancers and service businesses, with online payments, recurring billing, and a client portal built in.
Card on first Send only. Free plan stays free, forever.
Payments via Stripe
25 free email sends a month
No card to sign up
Online payments
Stripe-powered card and ACH
On Pro, clients pay directly on the invoice page. ACH is 0.8% capped at $5. Cards at standard processing rates.
Recurring billing
Set it and forget it
Retainer or subscription clients? Set a schedule and we generate and send the invoice automatically.
Common questions
Quick answers before you sign up
What kinds of payments can you collect?
Card, ACH bank transfer, and several Stripe wallets (Apple Pay, Google Pay, Cash App Pay, Klarna). You connect your Stripe account once and clients can pay directly on the invoice page.
Do you handle recurring billing?
Yes. Set a frequency and start date, and we automatically generate and email the invoice each cycle. You can pause, edit, or cancel any time.
Are there fees on top of Stripe processing?
No. Whatever Stripe charges, that is what comes out. We do not add a platform fee on payments. The Pro subscription is $19 a month, separate from payment processing.
Can I send estimates that turn into invoices?
Yes. Build an estimate, send it for client approval, and convert it to an invoice with one click once accepted.
Is WaffleInvoice good HVAC billing software?
Yes. WaffleInvoice is not HVAC-specific, but it works well for HVAC and other service businesses that need to bill for jobs: send an itemized invoice from your phone after a service call, collect payment online, and set up recurring billing for maintenance customers on Pro.
How does WaffleInvoice compare to Zoho Invoice and Invoice Simple as billing software?
Zoho Invoice is only free for businesses under $20K/year revenue and caps free accounts at 500 invoices a year. Invoice Simple has no lasting free plan: its Essentials tier is $4.99/mo capped at 3 invoices, and Premium is $19.99/mo to remove the cap. WaffleInvoice's free plan has no revenue cap, unlimited invoices, and 25 email sends per rolling 30 days, with no card required to sign up.
Ready to send your first invoice?
Free plan. Card on first Send only. Sign up in under 60 seconds.