I remembered a long timer who had his out of pocket expenses (cash type expenses, not tax return type expenses like depreciation and home business use) dialed in to 20%
at 150k that would be $30k for business expenses, 120k for you to divvy up however you like
or monthly:
12,500 income
$2,500 out of checking account business expenses
$10,000 for you to divvy up
what are you solo guys finding for out of checking expenses as a % of total revenue?