Stay: Money isn’t everything. Figure out your total compensation. Once you’ve factored in benefits and everything else, could it be that the pot of gold at the end of the rainbow really is out of reach? Remember, you’re only worth what someone will pay you. If what you want is more money, try riding the bus and stop eating out.
Leave: Hard to believe but some cheap employers even resort to scare tactics to dissuade you from asking for more. Others simply can't afford to align your paycheck with market norms, hoping you’ll accept “Atta boys!” in lieu of spendoolies. If you’re sure it’s not a case of “the grass is greener,” go for the greenbacks now.