Uma vez que tenho pendências, regularizo tudo.

Since I have outstanding issues, I put everything in order.

Breakdown of Uma vez que tenho pendências, regularizo tudo.

• ter: to have
• tudo: everything
• a pendência: the outstanding issue
• regularizar: to regularize; put in order

Questions & Answers about Uma vez que tenho pendências, regularizo tudo.

What does uma vez que mean here? Does it mean once or since/because?

Here, uma vez que means since / because / given that. It introduces a reason.

So in this sentence, it is not the literal time meaning once in the sense of after something happens.
That literal reading is possible in other contexts, but here the idea is causal: because I have pending issues, I sort everything out.

This expression can sound a bit formal or written.

Is uma vez que common in everyday Brazilian Portuguese?

It is common enough to be understood, but it sounds a little more formal than some other options.

In everyday Brazilian Portuguese, people often prefer:

• porque
• já que
• como (when it means since at the beginning of the sentence)

For example:

• Já que tenho pendências, regularizo tudo.
• Como tenho pendências, regularizo tudo.

So uma vez que is perfectly correct, but it has a slightly more formal tone.

Why is there no eu before tenho and regularizo?