Contract Outside IR35 but through Umbrella - Tax the same?

[Willy Win]

Possibly an obviously stupid question but asking it anyway as I have only contracted through an umbrella company once and that was inside IR35. As going Umbrella means being taxed as an employee, would deductions be exactly the same if the contract were Outside IR35 and day rate was the same also?...

[Snooky]

I assume a role, because otherwise substitution would never be a factor, but not quite sure. Does anyone have a definitive answer?

[Dark Black]

Heard from another contractor at the same client today that they have received a determination letter from the client stating they are "Inside" as of April (that contractor's contract extends past April).

The client is making their determinations on a per-contract basis....

[Scoooby]

I appreciate that some of this has already been covered and apologies for the lengthy post, but I wanted to focus on a couple of specific points to understand the differences, which I couldn’t find sufficient details on.

My situation

I’ve been contracting outside IR35...