How much money can i transfer to spouse without any tax implication?

So I am moving to home country for 1-2 years (I was on work permit and the WP is expiring next month). I have close to $15k in my bank account. Can i transfer this amount to my spouse's account before I leave? We are planning to invest this amount in TFSA and FHSA but since I am out of status, can this amount be invested by my spouse from his bank account? Would there be tax implications for my spouse or do we have to declare it while filing the tax?