For independent consultants & freelancers

Your calendar is already
your timesheet.

Cal2Bill reads your Outlook calendar and builds Zoho Books invoices automatically — no manual entry, no missed hours.

Start free with Microsoft
15-day free trial  ·  No credit card required
How it works

From calendar to invoice in seconds

1
Connect your accounts
Sign in with Microsoft and connect your Zoho Books account. Takes about two minutes.
2
Tag your calendar events
Use Outlook categories like "Onsite" or "Offsite" to mark billable work — the way you probably already do.
3
Pick a client and preview
Cal2Bill scans your calendar, calculates hours and rates, and shows you exactly what will be invoiced.
4
Save to Zoho Books
Hit build and a draft invoice appears in your Zoho Books account, ready to review and send.
Features

Everything a consultant needs

📅
Calendar-driven billing
Reads your Outlook calendar events and calculates billable time based on your rates and increments.
⚡
Smart sync
Already billed an event? Cal2Bill knows. It only adds new events and updates changed ones — no duplicates.
💼
Products & services picker
Add flat-rate products or services from your Zoho Books catalogue directly to any invoice.
👥
Per-client rates
Set different hourly rates for different clients. Cal2Bill reads them automatically from Zoho Books contacts.
🧾
Tax support
Supports HST, GST+PST, GST+QST, and US sales tax. Configure once, applied to every line item.
🔒
Privacy first
We never store your invoice contents, client names, or billing data. Only what's needed to run the service.
📱
Works on mobile
Installable as a PWA on iPhone and Android. Bill from anywhere, right after wrapping up a job.
Pricing

Simple, transparent pricing

Monthly
$14
USD / month
  • ✓ Unlimited invoices
  • ✓ All features included
  • ✓ Cancel anytime
Get started
Best value
Annual
$144
USD / year — 2 months free
  • ✓ Unlimited invoices
  • ✓ All features included
  • ✓ Cancel anytime
Get started
Both plans include a 15-day free trial  ·  No credit card required to start