Hourly, fixed or retainer
Set the billing type and the rate per hour or the fixed amount on each project.
Projects & time
Bill the hours you work, not the ones you remember
Log time against each client project, see what hasn't been billed, and turn it into a GST invoice with your SAC code in one click. Retainers go out every month on their own, with a UPI payment link.
For CAs, consultants, agencies, IT firms and freelancers who sell time.
- Hourly, fixed and retainer projects
- Unbilled hours to a SAC invoice
- Monthly retainers billed for you
Timer running
01:24:10
Revisions
Website redesign · Mehra & Co
No new invoicesMehra & Co
Website redesignMehra & Co · ₹1,600/hour
- MonBrand workshop4 h
- TueHomepage design6.5 h
- WedClient review call1.5 h
- ThuRevisions3 h
Unbilled · 15 h₹0
Invoice · INV-0412
Design services · SAC 998391₹24,000
CGST 9% + SGST 9%₹4,320
Total₹28,320
Pay ₹28,320
- Log time
- Unbilled
- Invoice
- Paid
On the timesheet
Log the hours, bill the unbilled in one step
Time logged against a project waits as unbilled until you invoice it, with the SAC code and the 18% GST split already on the bill.
invoice.othtech.com/projects/website-redesign
Website redesign
Mehra & Co · ₹1,600/hour · SAC 998391
| Day | Work | By | Hours | Amount |
|---|---|---|---|---|
| Mon | Brand workshop | Kavya | 4.0 | ₹6,400 |
| Tue | Homepage design | Arjun | 6.5 | ₹10,400 |
| Wed | Client review call | Kavya | 1.5 | ₹2,400 |
| Thu | Revisions | Arjun | 3.0 | ₹4,800 |
0.0 hours unbilled₹0
CGST 9% + SGST 9%₹0
Invoice total—
Bill 0.0 unbilled hours
Retainer · Arora Legal
Recurring invoice
- Amount
- ₹35,000 + GST
- Cycle
- Monthly
- Next invoice
- 1 Nov 2026
Raised on its own each run date
INV-0412 · Mehra & Co
15 hours at ₹1,600 · SAC 998391
- Design services
- 24,000
- CGST 9%
- 2,160
- SGST 9%
- 2,160
- Total
- ₹28,320
Paid by UPI · reminders stopped
Illustration · sample names and numbers
Projects and hours
Simple enough to fill in at the end of the day, so nothing billable slips through.
Log hours by the day
Add an entry with the date, the hours and what was done, down to a quarter of an hour.
Unbilled hours on view
Every project shows hours not yet billed and what they are worth in rupees.
One click to a GST invoice
Unbilled hours become an invoice line with the SAC code, at 18% GST, for the project's client.
Billing the hours
From timesheet to invoice in one click
When the month ends, open the project and click Bill. All unbilled hours go on one invoice line at the project rate, with the SAC code, and 18% GST is added for the client's state.
The hours are marked billed and linked to that invoice, so the next bill starts from zero.
- No copying hours from a spreadsheet
- SAC code on the invoice line
- CGST and SGST, or IGST, by the client's state
- Hours never billed twice
Invoice from logged hours
Client: Sharma Exports · October
- Project
- Website revamp · hourly
- Unbilled hours
- 12.5 hrs
- Rate
- ₹1,600 / hr
- Professional services · SAC 998311
- ₹20,000
- GST 18%
- ₹3,600
Invoice total₹23,600
Illustration · sample numbers
Getting paid
Retainers and reminders that run themselves
Set them up once. The invoices, links and follow-ups go out without anyone remembering to send them.
Recurring invoices
Monthly or weekly retainers raised on the date, with the same lines every time.
Sent by email
Turn on auto-charge and each recurring invoice is emailed with a fresh payment link.
UPI payment links
Clients pay by UPI, card or netbanking through your own Razorpay account.
Staged reminders
Overdue invoices get reminder emails at 3, 7 and 14 days, or a schedule you set.
Start billing time this week
- 01
Choose Services at signup
Your workspace opens with services defaults: SAC-based invoices at 18% GST and no stock screens to wade through.
- 02
Add clients and projects
Create a project for each client with its billing type, rate and SAC code.
- 03
Log hours as you go
Add time entries with the date, hours and a line on what was done.
- 04
Bill and get paid
Click Bill at month end, send the invoice with a payment link, and let reminders follow up.
Hours are entered by hand; there is no start-stop timer yet. All hours on a project bill at the project rate, and fixed-fee projects bill the full amount each time you click Bill. Recurring invoices come with the Basic plan and up.
Also on the dashboard
The services dashboard keeps the money you have earned but not billed in front of you.
Unbilled work
The rupee value of hours logged but not yet invoiced, across all projects.
Ready to bill
Projects with unbilled time, so month-end billing starts from a list.
Questions
Questions about projects and time
Something not covered here? Call or WhatsApp us and you'll speak to the people who build the product.
Hourly projects bill the hours you log at the project's rate. Fixed-fee and retainer projects bill the agreed amount in one click whenever you are ready to invoice.
Each project shows its unbilled hours and their value. Click Bill and all unbilled hours go on one GST invoice line, hours times rate, with your SAC code in the description. Those entries are then marked billed so they never go out twice.
You set the SAC code on each project. It starts at 998311, management consulting, and you can change it. Project invoices are raised at 18% GST, split into CGST and SGST or IGST by the client's state.
Yes. Set up a recurring invoice for the client with the retainer amount. It is raised every month, or every week if you prefer, and can go out by email with a payment link on its own.
Add a payment link to the invoice and the client pays by UPI, card or netbanking through your own Razorpay account. The invoice is marked paid once the payment is confirmed.
Overdue invoices get staged reminder emails, by default at 3, 7 and 14 days, and you get an in-app alert at each step.
Bill this month's hours properly
Start a 14-day free trial, add a client project, log a few hours and raise your first GST invoice from them. No card needed.
- 14 days free
- SAC codes on invoices
- UPI payment links