I recently got a promotion at work. How much of a salary increase would put me in jeopardy of having my child support payments increased?

If you already have an existing child support order, the amount is subject to modification if it would raise or lower by 20% or greater. This would require running the Form 14 calculation with your new income figures - in other words, it is not that your income is 20% different, but the bottom line amount on the child support calculation would deviate by at least 20%. Even so, it is not incumbent upon you to raise the issue that your support amount should increase. The other side would have to determine that and file for a modification. Also remember that in Missouri the Department of Child Support Enforcement supposedly reviews the parties' incomes every three years, although I have seen cases not be reviewed or modified for a decade or more. I believe the state is much more interested in reviewing when they have a monetary interest, such as a case where the state is providing benefits for the children like Medicaid or TANF.