The phrase "favourable terms" means that something is agreed upon or offered in a positive and beneficial way. It suggests that the conditions or terms being offered are advantageous, fair, or advantageous to someone. Full definition
So if you don't have the money to pay them, you should be able to arrange a line of credit with a bank on more favourable terms. (business.financialpost.com)
Where a tax dispute can not be resolved on favourable terms for our clients at an administrative level, appeals to the appropriate Court for an impartial review may be appropriate. (felesky.com)
It's your fiduciary responsibility to your clients to do everything possible to obtain the most favourable terms for them. (remonline.com)