That can't be anything to do with the sliders, since the % is literally a percantage of your money goes here, a percent goes there etc. It's not till late game that changing the sliders really affects your income. Unless you mean the overall slider (below tax), which should be at 100% pretty much all the time. If you ever have a deficit, improve your economic strategy. IE, change a few planets over to farms/ stock markets. I'm unhappy making anything less than 1000bc a turn, so I can buy a ship a turn if a war occurs.