Per Diem and Travel for non-resident director

[BenDover]

Hi Everyone,

this forum is really great and has helped me a lot, however, for some topics I couldn't find any answers. Hope you can help:

We have a non-resident director/employee who lives outside Singapore. I'm trying to understand regulations for travel expense reimbursements. So far I understand the following:

for trips into Singapore:
- Hotel can be reimbursed non-taxable
- Travel expenses (taxi, etc.) can be reimbursed non-taxable
- Per Diem as per Singapore per diem guideline
- Airfare can only be reimbursed non-taxable if he's coming for a board meeting: is it true that for anything else flight costs would be considered taxable?

however, I can't find any information for trips outside Singapore.
He will be doing business trips from his home country to some other country (not Singapore) for working with a client.
Which per diem structure can be used? Same as Singaporean one? and would it be then taxable?

Also I would like to know if he would need a work permit to visit Singapore for a board meeting. There is some conflicting information at IRAS and Singapore websites that allow 60 short term visit without work permit but also don't allow signing any documents (such as board resulotions) within Singapore unless he becomes taxable.

Anyone here who figured these parts out?
Glad for any help, even if just a hint.

Best regards
BenDover