Stop copy-pasting. Cal2Bill reads your calendar events and builds your invoice automatically — in seconds.
15-day free trial · No credit card required · $14 USD/month after
No complex setup. No learning curve. Connect, pick, invoice.
Sign in with Microsoft and connect your Zoho Books account. Cal2Bill only reads what it needs — nothing else is stored.
Select a client and Cal2Bill scans your Outlook calendar for matching events. Check the ones to include — rates are calculated automatically.
Hit Build Invoice and a complete draft lands in your Zoho Books — line items, rates, taxes, and all. Review, clean, and send.
Built for the way independent consultants actually work — not for enterprise teams with a dedicated billing department.
Already invoiced some events? Cal2Bill remembers. It adds new ones, updates changed ones, and skips duplicates — every time.
Onsite hourly, service call flat fee, or offsite remote — each with its own rate and block structure. Configurable per client.
HST, GST+PST, GST+QST, or US sales tax. Cal2Bill handles Canadian provincial tax structures out of the box.
Add parts, hardware, or service items to any invoice with a searchable picker — pulled directly from your Zoho Books item list.
Cal2Bill never stores your calendar contents, invoice data, or client names. Your billing data is yours — we just move it.
Installable as a PWA on iPhone and Android. Invoice from anywhere — even from a client's site after the job is done.
I ran my IT consulting business for almost twenty years before the invoicing chaos finally caught up with me. Every month, the same thing — scroll back through Outlook, piece together what I did for each client, copy times into Excel, rebuild it all manually in Zoho Books. Hours gone. Repeatedly.
I kept putting it off. Weeks would pass. Then one day I sat down to do my invoicing and realized I hadn't billed some clients in well over a year. Real work, real hours — just never invoiced.
I'd been searching for a solution for most of those twenty years. Something that would just read my calendar and build the invoice automatically. Nothing existed that fit the way an independent consultant actually works. So I built it myself.
That's Cal2Bill. Simple by design — because your tools should work for you, not the other way around.
One product. Two billing options. No feature tiers, no paywalled essentials.
Billed monthly. Cancel anytime.
$12/month, billed annually.
15-day free trial on both plans · No credit card required · Trial starts on your first invoice build
Cal2Bill just launched. Be one of the first — try it free and share your experience.
We're looking for beta testers.
Try Cal2Bill free for 6 months in exchange for honest feedback.
Get in touch →
Reviews from early users will appear here. Start your free trial and let us know what you think.
Built by a consultant, for consultants. If it doesn't work for your workflow, we want to hear about it.
Have a question, found a bug, or want to explore a beta spot? Drop us a message and we'll get back to you — usually within one business day.
🧪 Beta program open
Looking for 5–10 beta testers. Get 6 months free in exchange for honest feedback. Mention "beta" in your message.