Invoice Software for Sole Traders
From customer to quote to appointment to mileage to invoice to payment — MileageCalendar connects the entire sole trader workflow so you enter each detail once.
Sole traders juggle too many disconnected tools
As a sole trader, you are the sales team, the service delivery team, the admin team and the finance team. You create quotes for customers, book appointments, drive to jobs, track mileage, buy materials, create invoices and chase payments — often using four or five different tools that do not talk to each other.
The result is double entry, missed details and hours of evening admin. You enter the customer in your quote tool, then again in your calendar, then again in your invoice. You track mileage in one app and expenses in another, then manually add them to an invoice created in a third.
This is not just inefficient — it is exhausting. And it is the number one reason sole traders fall behind on their admin and lose track of what they are owed.
One connected workflow for sole traders
MileageCalendar connects the entire sole trader workflow. You create a customer once. You create a quote for that customer. When they accept, you book an appointment in your calendar. You drive to the job and MileageCalendar calculates the mileage. You buy materials and scan the receipts. When the work is done, you convert the quote into an invoice — with the mileage and expenses already attached.
The customer pays, you record the payment, and the whole cycle is complete. Every piece of information — the customer, the quote, the appointment, the mileage, the expenses, the invoice, the payment — is connected. You enter it once and it flows through.
This is what makes MileageCalendar different from standalone invoicing tools. It is not just an invoice creator — it is the connective tissue between every part of your sole trader admin.
Create customer
Add a customer once and reuse them across quotes, appointments, mileage and invoices.
Create quote
Send a professional quote. When the customer accepts, convert it to an invoice with one click.
Book appointment
Schedule the work in your calendar. Mileage is calculated automatically from the appointment.
Record mileage
Business mileage is tracked from your calendar appointments — no manual logging.
Record expenses
Scan receipts for materials and expenses. They attach directly to the invoice.
Create invoice
Convert the accepted quote into an invoice. Mileage and expenses are already included.
Record payment
When the customer pays, record it against the invoice. Your records stay up to date.
Export to accounting
Sync everything to Xero, QuickBooks, FreeAgent or Sage for your Self Assessment.
How it works
Customer → Quote
Add the customer and create a professional quote for the work.
Appointment → Mileage → Invoice
Book the job, drive there (mileage tracked automatically), then convert the quote to an invoice with mileage and expenses attached.
Payment → Records
Record the payment and sync to your accounting software. The whole cycle is complete.
Frequently Asked Questions
Run your sole trader admin in one place
Quotes, appointments, mileage, expenses, invoices — connected.
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