What it is
Your own retirement contribution to the TSP, either Traditional (pre-tax) or Roth (post-tax), taken as the percentage of pay you elected in myPay. Under the Blended Retirement System the government adds an automatic 1 percent and matches up to an additional 4 percent.
2026 rate
Your elected percentage of basic pay and any special pay elections, subject to the annual IRS limit.
What goes wrong
Two things: first, the deduction should equal your elected percentage times the pay on this LES, to the penny. Second, if you max the annual IRS limit before December, you lose matching for the remaining months under BRS. Spread contributions so you are still contributing at least 5 percent in December.