How often should lawyers record time?

As close to the work as practical. Many lawyers log after each task, then review weekly.

Should I track time on fixed fee matters?

Yes. Without it you cannot tell whether the fixed fee was profitable or how to price the next one.

Yes, through a database of entries linked to matters, with views and sums. It is a log, not a billing engine.

What you did and its purpose, in enough detail for the client to understand the charge. Follow any rules or client billing guidelines that apply.

Check your fee agreements and local professional rules on billing increments and narrative detail.

1
Log as you go
Add an entry at the end of each task, not at the end of the day.
2
Use one place
A single time log linked to matters. MatterOS includes a time database with matter-level views.
3
Run a Friday review
Check for gaps against your calendar and sent email.
4
Close the loop before invoicing
Review unbilled time per matter, edit narratives, then invoice.

Question	Where to look
Which matters take more time than expected?	Time by matter against the estimate you gave
Is fixed fee work profitable?	Hours on fixed fee matters against the fee
Where is non-billable time going?	Time by category
What is stuck unbilled?	Billable entries not yet on an invoice

MatterOS tracks time by matter but does not produce invoices or run trust accounting; pair it with accounting software for those.

How often should lawyers record time?: As close to the work as practical. Many lawyers log after each task, then review weekly.
Should I track time on fixed fee matters?: Yes. Without it you cannot tell whether the fixed fee was profitable or how to price the next one.
Can Notion track billable time?: Yes, through a database of entries linked to matters, with views and sums. It is a log, not a billing engine.
What should a time narrative say?: What you did and its purpose, in enough detail for the client to understand the charge. Follow any rules or client billing guidelines that apply.

Raghav Handa trained as a lawyer, then spent years building legal technology, from enterprise legal products to custom systems for law firms.