Professional invoices
Clean, itemized invoices with your logo, brand color, notes, and tax settings — shareable with customers as polished invoice links.
S Invoice · An S Protocol product
Simpler invoicing
for service businesses.
Create professional estimates and invoices, send them to customers, track payments, and keep your business records organized — without adopting a full operations platform on day one.
Free to get started — sign up in minutes.
EstimatesInvoicesCustomersPayment trackingOnline paymentsAttachments
Who it’s for
Built for independent service pros and small crews.
If your work happens at the customer’s door — quotes, jobs, and getting paid — S Invoice keeps the paperwork simple. It’s made for businesses like:
HandymanAppliance repairCleaning servicesLocksmithsHVACPlumbingElectricalMobile mechanicsLandscapingJunk removalGeneral contractorsOther service businesses
What you get
The paperwork side of the job, handled.
Everything you need to quote work, bill for it, and keep clean records — nothing you don’t.
Estimates
Quote the work first. Build itemized estimates, send them to the customer, and convert an approved estimate into an invoice in one step.
Customer records
Keep every customer’s contact details, documents, and billing history in one place — so repeat work starts from what you already know.
Payment tracking
Record payments against every invoice — including partial payments and refunds — and always know what’s outstanding.
Online payments with Stripe
Connect Stripe to let customers pay invoices online by card. Payments reconcile automatically against the invoice.
Photos & attachments
Attach photos and documents to invoices — before-and-after shots, receipts, and paperwork stay with the record they belong to.
How it works
Estimate. Invoice. Get paid.
A workflow that matches how service work actually happens — from your phone’s browser at the job site or from a laptop at home.
Send the estimate
Price the job with itemized line items and share it with your customer before the work starts.
Turn it into an invoice
When the work is approved or done, convert the estimate straight into an invoice — no retyping.
Track the payment
Collect online through Stripe or record cash and checks. Partial payments and refunds are handled too.
Work from anywhere
Mobile-first, wherever the job takes you.
S Invoice is a web app designed for small screens first — create an estimate in the driveway, convert it in the kitchen, and send the invoice before you leave. No installation required: it runs in the browser on your phone, tablet, or computer.
Part of the S Protocol family
Start simple. Grow into the full platform.
S Invoice shares its foundation with S Protocol, the full service-business operating platform. Your customers, estimates, and invoices live on the same system — so when you’re ready for scheduling, dispatch, technicians, and team workflow, you can move up without starting over.
Today
S Invoice
Estimates, invoices, customers, and payments. The fastest way to make the paperwork professional.
EstimatesInvoicesCustomersPayments
Create your account
When you’re ready
S Protocol
The full operating platform — jobs, dispatch, scheduling, technicians, team communication, and reporting on top of everything S Invoice does.
JobsDispatchSchedulingTeamReports
Explore S Protocol
Both products are built and operated by the same team, on the same platform — S Invoice is simply the lighter way in.
Make the next invoice
the easiest one you’ve sent.
Professional estimates and invoices for independent service businesses — free to get started.