TSP Basics

Thrift Savings Plan (TSP) Basics: Regulatory and Operational Overview

This module provides a technical overview of the Thrift Savings Plan (TSP) as defined by the Federal Employees’ Retirement System Act of 1986.

I. Regulatory Context

The TSP is a Federal Government-sponsored retirement savings and investment plan. It is a defined contribution plan, governed by Section 401(a) of the Internal Revenue Code and the Federal Retirement Thrift Investment Board (FRTIB). For FERS employees, the TSP constitutes one of the three components of the retirement package, alongside the FERS Basic Annuity and Social Security. Contributions are subject to annual elective deferral limits set by the IRS under Section 402(g).

II. If/Then Scenarios

• If a FERS employee contributes at least 5% of their basic pay, then the agency provides a 1% automatic contribution and a 4% matching contribution, totaling a 5% agency match.
• If an employee chooses the Traditional TSP, then contributions are made pre-tax, reducing current taxable income, but withdrawals are taxed as ordinary income.
• If an employee chooses the Roth TSP, then contributions are made after-tax, and qualified withdrawals are tax-free.
• If a participant separates from federal service before age 59½, then withdrawals may be subject to a 10% early withdrawal penalty unless an IRS exception applies.

III. System Integration

The TSP integrates with the broader federal benefits payroll system. Employee contributions are deducted automatically from gross pay via the National Finance Center (NFC) or equivalent agency payroll providers. For FERS participants, agency-matching funds are vested immediately, while agency-automatic (1%) contributions typically vest after three years of federal service. Fund allocations are managed through the TSP’s primary recordkeeping system, which interfaces with the Department of the Treasury to execute trades within the five core investment funds (G, F, C, S, and I).

IV. 3-Step Action Plan

1. Verify Contribution Percentage: Access the agency’s self-service payroll portal (e.g., Employee Express, MyPay) to ensure the contribution rate is at least 5% to capture the full agency match.
2. Establish Allocation Strategy: Log in to the official TSP website to designate the distribution of future contributions among the available Lifecycle (L) Funds or individual investment funds.

Designate Beneficiaries: Complete and submit Form TSP-3 (Designation of Beneficiary) to ensure the account balance is distributed according to the participant’s intent, as TSP assets bypass standard wills.