What child support means
Child support is a court-ordered transfer from one parent to the other to help cover a child's living costs. Most states calculate it with a formula that weighs each parent's income and the amount of parenting time, so the number is less negotiable than many parents expect. It is a legal obligation set by the order, not an informal arrangement.
It is worth separating from shared expenses, which parents split between themselves for specific costs like uncovered medical bills, activities, or school fees. Support is the baseline periodic payment; shared expenses are the extras allocated by your order or agreement. Confusing the two is a common source of conflict.
For documentation, keep support and shared expenses in clearly separate ledgers. If a modification ever comes up, or if a payment dispute arises, a clean record of what was paid, when, and for what keeps the conversation factual.
Example: logging that you covered a $220 dental bill and requested the other parent's half is a shared-expense entry; it does not change the support figure, and keeping the two apart avoids the argument that one should offset the other.