Compare similar life situations, assumptions, and retirement tradeoffs.
United States
Work & income
US freelancer: Solo 401(k) or SEP IRA for retirement?
For: Single US freelancer (38), renter, choosing between a Solo 401(k) and a SEP IRA
For a freelancer with uneven income, the better retirement account often depends less on headline limits and more on whether you can save steadily through the.
For: Single Austin tech worker (35), renter, laid off mid-career while pursuing FIRE
An Austin-based single tech worker compares keeping an aggressive FIRE plan, resetting the retirement age after a long job search, or rebuilding cash first.
US self-employed: Solo 401(k), IRA, buffer, or taxable?
For: US self-employed consultant (40), irregular income, deciding whether tax shelter, cash buffer, IRA, or taxable savings comes first
For a self-employed worker with uneven income, the right first dollar may be tax shelter, cash reserve, or taxable flexibility. Compare three funding routines.
If your employer offers a real 401(k) match, the strongest default is usually to capture at least that match before throwing every spare dollar at ordinary student loans. The exception is important: high-rate private debt, a fragile emergency fund, or a forgiveness plan can make the best answer very different.
This scenario follows a single US renter who is 32 in January 2026, has $45,000 of student loans, and is deciding whether the next flexible dollars should go to retirement, faster loan payoff, or both. The point is not to declare a universal rule. It is to show how the trade-off changes when early employer money, loan stress, job gaps, moving costs, and retirement spending all sit in the same cashflow picture.
All dollar amounts are in today's money. The scenario uses a real return assumption, so future balances are shown without adding inflation on top; actual future paychecks and bills would be higher in nominal dollars.
Match first keeps retirement saving alive from age 32 and preserves an estimated safe retirement budget of $4,892/month in the base case.
Debt first creates faster loan relief, but it only works here because the plan assumes the borrower redirects the freed cash into larger 401(k) contributions from age 37 onward.
Split plan gives up some purity on both sides and lands close to match-first in the base case, with an estimated safe retirement budget of $4,981/month.
The detailed comparison below uses "retirement effort" for the average planned monthly amount going into retirement during working years, including the assumed employer match where the strategy captures it. The loan-prepayment amounts are story assumptions used to show cashflow pressure; this simulator does not amortize the student loan or promise a payoff date.
Variant
Working-years plan
Retirement result
Growth by retirement
Practical read
Base · Match first
$970/mo retirement effort; modest loan prepay to age 39
$732k at retirement; $4,300 planned / $4,892 safe
≈$330k interest
Captures the match early and still leaves about $592/month above planned retirement spending.
Pessimistic · Match first
$970/mo retirement effort; modest loan prepay to age 39
$648k at retirement; $4,300 planned / $4,311 safe
≈$246k interest
Works, but almost all of the safe budget is already committed.
Optimistic · Match first
$970/mo retirement effort; modest loan prepay to age 39
$763k at retirement; $4,300 planned / $5,113 safe
≈$361k interest
Early contributions have more room to compound, creating a larger cushion.
Base · Debt first
$1,129/mo retirement effort; heavy loan prepay to age 36
$799k at retirement; $4,550 planned / $5,175 safe
≈$329k interest
Assumes a true catch-up habit after payoff, which is why the result can look strong.
Pessimistic · Debt first
$1,129/mo retirement effort; heavy loan prepay to age 36
$718k at retirement; $4,550 planned / $4,582 safe
≈$248k interest
The higher planned spending leaves only $32/month of safe headroom.
Optimistic · Debt first
$1,129/mo retirement effort; heavy loan prepay to age 36
$829k at retirement; $4,550 planned / $5,398 safe
≈$359k interest
Best headline safe budget, but only if post-payoff contributions actually rise.
Base · Split plan
$1,031/mo retirement effort; steady loan prepay to age 42
$753k at retirement; $4,400 planned / $4,981 safe
≈$324k interest
Keeps both habits visible and leaves about $581/month above planned spending.
Pessimistic · Split plan
$1,031/mo retirement effort; steady loan prepay to age 42
$672k at retirement; $4,400 planned / $4,402 safe
≈$243k interest
Barely clears the planned budget under lower returns, so liquidity discipline matters.
Optimistic · Split plan
$1,031/mo retirement effort; steady loan prepay to age 42
$783k at retirement; $4,400 planned / $5,200 safe
≈$354k interest
A balanced path with strong upside if returns are modestly better.
The first read should not be "which row has the largest ending balance?" It should be "which row keeps both habits alive without starving liquidity?" The lower-return rows are the reality check: all three paths preserve the target buffer, but the pessimistic match-first and split rows leave almost no extra safe spending room.
Compound growth is doing real work, and the table separates it from capital left over. By retirement, the base cases have earned roughly $324,000-$330,000 of investment growth before spending begins, while the modest upside cases are closer to $354,000-$361,000. By the end of the horizon, cumulative interest ranges from about $575,000 in the weakest match-first run to about $1.07 million in the strongest debt-first run, but some of that interest funds retirement spending along the way.
This page is built around a very specific cashflow decision, not a universal debt rule. It asks whether the first flexible dollars should go to retirement, loan payoff, or both when the worker is still renting and has not yet built huge savings.
The core questions are:
Does the employer match create enough early retirement momentum to justify carrying student debt longer?
How much does the answer change if the borrower delays investing for a few years to attack the balance?
Which plan leaves enough room for an emergency fund, a move, a job gap, and a car replacement without breaking the contribution habit?
That last question matters because the clean mathematical answer can fail in real life. A borrower with no emergency cash may make extra loan payments for six months, then put a medical bill or moving deposit on a credit card. A worker who contributes enough for the match but ignores a high-rate private loan can also be making a bad trade. The useful answer sits between those extremes.
The everyday budget is intentionally not listed line by line. Rent, utilities, food, transport, insurance, minimum loan payments, and modest discretionary spending are assumed to be covered before the optional choices shown here. Typical single-renter monthly expenses for this profile sit around $4,200-$5,300, including the required student-loan payment but excluding optional extra loan prepayment and new 401(k) choices.
The retirement contributions include the worker's own deferral plus the assumed employer match when the strategy captures it. The common-plan example behind the match-first path is close to a 6% employee deferral with a 3% employer contribution on a salary around $90,000. Contributions then rise in the worker's 40s and 50s as income grows and loan pressure eases.
The plan also makes room for ordinary shocks: an emergency-fund top-up at age 33, moving and rental setup costs at age 36, a job gap or unpaid leave buffer at age 43, a used car replacement at age 48, and a healthcare out-of-pocket shock at age 58. These are the kinds of costs that turn a tidy "pay debt faster" or "always invest" rule into a messy cashflow decision.
The match-first path starts retirement contributions immediately and keeps extra loan payments modest. It is the cleanest answer when the loans are federal, the interest rate is moderate, the required payment is manageable, and the borrower is not credibly on track for loan forgiveness that would make extra prepayment wasteful.
The key point is not that the employer match is a magic investment return. It depends on plan rules, vesting, timing, employment, and the actual formula. For moderate-rate federal loans, employer money can be difficult to beat if the deferral does not weaken your cash buffer.
This path still pays extra toward the loan through age 39. It simply refuses to let debt urgency erase the retirement habit during the worker's 30s. That matters because the dollars invested at 32 have decades to compound; the loan payoff benefit is real, but it does not compound in the same way after the balance is gone.
The debt-first path is designed for the borrower who cannot stand the loan balance or who has higher-rate debt than the base case. It sends a much larger extra payment toward student loans through age 36, then redirects the freed cash into retirement contributions afterward.
This can be a sensible path for private loans at uncomfortable rates, loans with weak borrower protections, or a household whose debt payment creates constant stress. It is also easier to defend when the employer match is weak, has a long vesting cliff, or is not available until after a waiting period.
The cost is obvious: this path skips early 401(k) dollars and assumes the worker really does catch up later. That is the fragile part. Debt-first works best when the payoff creates a permanent increase in retirement saving, not a few years of lifestyle inflation after the loans are gone.
The split path is the compromise many borrowers can actually maintain. It captures some retirement momentum while still sending a meaningful extra payment to the loans. It does not optimize for the fastest payoff or the highest early match capture; it optimizes for continuity.
This path is especially useful when the loan rate is neither obviously low nor obviously high, or when the borrower is still learning how stable their post-tax cashflow really is. It also gives you a built-in test: if the split feels easy for a year, raise the 401(k) deferral or the loan prepayment. If it feels tight, the plan is telling you that liquidity comes first.
The split plan modeled here keeps extra loan payments going longer than the debt-first path, but it also avoids the zero-contribution start. That makes it a strong default when the question is less "what is mathematically perfect?" and more "what will I still be doing two years from now?"
At age 67, the scenario uses $2,300/month of Social Security as a planning anchor, not a guarantee. Planned retirement spending ranges from $4,300/month in the match-first variants to $4,550/month in the debt-first variants, so the portfolio has to cover the gap plus shocks.
The retirement years also include a $90,000 later-life care reserve at age 82. Several base and optimistic variants still end with more than 10 years of expenses at age 92. That is intentional cushion in this version, not an instruction to underspend; in your own plan, you may want to redirect some of that cushion toward care, family support, giving, or a higher retirement lifestyle.
When you open the preset, change these assumptions before trusting the result:
Replace the loan balance, rate, and remaining term with your actual loans. Federal undergraduate debt at roughly 6%-7% is a different decision from private variable-rate debt above 10%.
Add your actual employer match formula, vesting rule, eligibility date, and whether the plan offers a true-up. If your employer can match qualified student-loan payments under its own plan rules, model that separately instead of assuming the standard match-first trade-off.
Use your own emergency-fund target. Before aggressive payoff, this scenario assumes at least a small cash reserve and later models a durable buffer through ordinary shocks.
Replace the Social Security estimate with your own account estimate and adjust retirement spending to match your rent, healthcare, and lifestyle.
If you are pursuing PSLF or another forgiveness path, do not use this as a payoff recommendation. Create a branch where extra loan payments are removed or reduced, then compare the retirement impact.
Small changes can flip the practical answer. A 3.5% federal loan with a solid match usually points toward match-first or split. A 12% private loan with no match, no forgiveness option, and a thin cash buffer can justify debt-first. A borrower in public service with credible PSLF eligibility may need an entirely different model.
Federal student-loan repayment is plan-specific. The standard plan is a clean comparator, but IDR, PSLF, consolidation, deferment, forbearance, and current legal changes can change the payoff decision. Use Federal Student Aid and your servicer for plan-specific numbers.
The 401(k) match is not guaranteed wealth. It depends on the employer formula, vesting, payroll timing, investment menu, employment continuity, and plan eligibility. Treat it as a valuable parameter, not a universal promise.
Contribution limits are not the bottleneck here. The modeled contribution levels sit far below 2026 401(k) employee deferral limits for most workers. The real constraint is cashflow after rent, taxes, health premiums, required loan payments, and emergency savings.
Student-loan matching is optional. SECURE 2.0 allows some employers to make retirement matching contributions based on qualified student-loan payments, but it is plan-specific. Check your plan document before assuming loan payments can generate match dollars.
This scenario is an educational model, not personal financial advice. It simplifies taxes, benefits, student-loan rules, and investment implementation so you can compare ranges and trade-offs.