One of the most important decisions federal employees make while contributing to the TSP is:
Should I use Roth or Traditional?
The answer depends on taxes—specifically when you want to pay them.
If you want to model your retirement income:
https://fersfree.com
The Core Difference
Traditional TSP:
- Contributions are pre-tax
- You pay taxes later in retirement
Roth TSP:
- Contributions are after-tax
- Withdrawals are tax-free in retirement
Simple Example
Let’s say you contribute $10,000:
Traditional:
- No tax today
- Pay tax later
Roth:
- Pay tax today
- Withdraw tax-free later
When Traditional TSP Is Better
Traditional may be better if:
- You are in a high tax bracket now
- You expect to be in a lower bracket in retirement
- You want to reduce taxable income today
When Roth TSP Is Better
Roth may be better if:
- You are in a lower tax bracket now
- You expect higher taxes later
- You want tax-free income in retirement
Why Federal Employees Should Think Differently
You will likely have:
- FERS pension (taxable)
- TSP withdrawals (taxable unless Roth)
- Social Security (partially taxable)
This means adding Roth income can reduce your total tax burden later.
Example Retirement Scenario
- FERS: $3,500/month (taxable)
- TSP: $2,000/month
- Social Security: $2,000/month
If all TSP is Traditional → higher taxes
If some is Roth → more flexibility
Roth Gives You Flexibility
With Roth, you can:
- Control taxable income
- Avoid higher tax brackets
- Reduce taxes on Social Security
5 Common Mistakes
- Using only Traditional
- Ignoring future tax rates
- Not diversifying tax buckets
- Forgetting required distributions
- Not modeling retirement income
Best Strategy for Most People
Many federal employees benefit from a mix of both:
- Traditional for tax savings now
- Roth for tax flexibility later
What About Matching?
Government matching always goes into:
Even if you contribute Roth.
What to Do Next
Compare:
- Roth vs Traditional outcomes
- Tax impact in retirement
- Withdrawal strategies
Disclaimer
Educational only. Consult a financial or tax professional before making decisions.