Compare similar life situations, assumptions, and retirement tradeoffs.
United States
Saving & catch-up
US saver: is $500 or $1,000 a month enough for retirement?
For: Single US worker (35), renter, deciding whether $500 or $1,000/month is realistic for retirement
Saving $500 a month can still build a workable retirement plan in the US, but this scenario shows why $1,000 a month usually buys more flexibility and why the.
US late starter (50): can catch-up 401(k) + Roth IRA still work?
For: Single US worker (50), renter, small retirement balance, deciding how aggressively to catch up using 401(k) + Roth IRA
Can a 50-year-old with only $50,000 saved still build a workable retirement plan? This US scenario compares a steady catch-up path, a harder max-push path.
For a single 38-year-old renter earning $95,000, workplace-plan coverage changes the practical answer. With no workplace plan, this illustration assumes a fully deductible $7,500 Traditional IRA contribution and reinvests a federal tax saving of $1,650 a year. With workplace coverage, $95,000 is above the 2026 single-filer deduction phaseout, so the alternative uses a $7,500 Roth IRA plus $7,500 of Roth workplace-plan saving.
This is an investable-cash-flow comparison, not an after-tax account forecast. The simulator combines all investments into one portfolio and does not calculate Traditional IRA withdrawal tax, Roth tax-free withdrawals, required minimum distributions, Medicare premiums, employer matching, or account-specific fees. The results therefore show what happens when $137.50/month of assumed federal tax savings is also invested; they do not prove that one account type produces better after-tax retirement wealth.
All amounts are in today's money. Contributions run from ages 38 through 66 at a flat real amount, which is a simplification rather than a forecast of future IRA limits or salary growth.
Each return-matched pair uses the same retirement spending, Social Security, dates, starting balance, and one-off expenses. The Traditional branch invests $625/month in the IRA, $625/month in an additional account, and $137.50/month of estimated federal tax savings. The Roth/workplace branch invests $625/month in the Roth IRA and $625/month in a Roth workplace plan. State taxes are excluded.
Variant
Invested / month
Planned / 60-month-buffer budget
Base · Traditional + deduction
$1,388
$4,900 / $5,286
Base · Roth + workplace saving
$1,250
$4,900 / $4,960
Pessimistic · Traditional IRA
$1,388
$4,200 / $4,521
Pessimistic · Roth + workplace
$1,250
$4,200 / $4,262
Optimistic · Traditional IRA
$1,388
$5,800 / $6,245
Optimistic · Roth + workplace
$1,250
$5,800 / $5,835
Variant
Interest by retirement
Base · Traditional + deduction
$338k
Base · Roth + workplace saving
$307k
Pessimistic · Traditional IRA
$231k
Pessimistic · Roth + workplace
$211k
Optimistic · Traditional IRA
$463k
Optimistic · Roth + workplace
$422k
The second budget figure is the simulator's 60-month-buffer estimate, not its looser sustainable-spending figure. All six plans remain above their planned spending under that guardrail. The narrowest margins are $35/month for Optimistic Roth/workplace, $60/month for Base Roth/workplace, and $62/month for Pessimistic Roth/workplace. The Traditional margins are $445, $386, and $321/month, respectively.
The modeled gap is caused only by the extra $137.50/month invested in the deductible Traditional branch. Base Traditional reaches $827,423 at retirement versus $749,321 for Base Roth/workplace and earns $337,573 versus $307,321 of interest by retirement. Those are portfolio values before any account-specific tax treatment.
The 2026 IRA contribution limit is $7,500 for savers under 50, or $8,600 for those 50 and older. This is a combined limit across Traditional and Roth IRAs — you cannot contribute $7,500 to each.
Whether the Traditional IRA deduction is available depends on income and whether you are covered by a retirement plan at work. For a single filer covered at work, the deduction phases out from $81,000 to $91,000 MAGI in 2026. At the scenario's assumed $95,000 MAGI, it is unavailable. If the saver is not covered at work, this income-based phaseout does not apply.
Roth IRA direct contributions phase out for single filers between $153,000 and $168,000 MAGI in 2026. At the scenario's assumed $95,000 MAGI, the saver is well below that range and qualifies for the full direct Roth contribution under the supplied 2026 limits.
As a cautious decision rule, a deductible Traditional IRA may be more attractive when today's marginal tax rate is expected to be higher than the rate on withdrawals in retirement and the current tax saving is invested. A Roth IRA may be more attractive when today's rate is lower, the Traditional deduction is unavailable, or future tax-free withdrawal flexibility is especially valuable. Splitting savings across pre-tax and Roth accounts can provide tax diversification when future rates are uncertain, but it is not a universal answer. This simulator does not calculate those after-tax account outcomes, so use this framework alongside, not as a conclusion from, the portfolio results above.
State income tax treatment is not modeled. The Traditional estimate uses only an illustrative 22% federal marginal rate: $7,500 × 22% = $1,650/year, or $137.50/month. Gross salary alone does not establish a tax bracket, so replace this rate using your filing status, MAGI, deductions, and tax advice.
The backdoor Roth IRA (contribute to a Traditional, then convert) is an option when income exceeds the Roth phaseout, but the pro-rata rule makes it complex if you already have pre-tax Traditional IRA balances. This page does not model backdoor conversions.
Working-life living expenses are outside the portfolio model. Retirement spending is $4,200/month in the pessimistic pair, $4,900/month in the base pair, and $5,800/month in the optimistic pair—within the research range for a renter whose housing costs continue in retirement.
The portfolio pays a $28,000 car replacement at age 45 and a $10,000 consumed emergency expense at age 50. The latter is not an emergency-fund transfer to cash; it represents money spent and no longer held in modeled wealth. A $50,000 later-life care expense occurs at age 82. Social Security is a $2,200/month planning anchor from age 67, within the researched range but not a personalized estimate.
This branch assumes no workplace-plan coverage, a fully deductible $7,500 IRA contribution, and an illustrative 22% federal marginal rate. It invests the resulting $137.50/month tax saving, plus $625/month of additional long-term saving outside the IRA. The model does not deduct retirement withdrawal taxes, so its higher displayed balance is not an after-tax comparison.
This branch represents the eligibility squeeze the workplace-coverage rule creates. At the stated $95,000 MAGI, a covered single filer cannot deduct a Traditional IRA contribution but can still contribute directly to a Roth IRA under the 2026 income limit. The branch therefore combines $625/month in a Roth IRA with $625/month in a Roth workplace plan. It assumes no employer match.
Qualified Roth withdrawals and the absence of lifetime Roth IRA required minimum distributions may matter in a real plan, but those advantages are not priced into the table. Use the displayed results as the portfolio baseline, then compare account-level taxes separately.
Both branches commit at least $1,250/month to retirement and long-term saving. That mixed approach is more consequential than treating the IRA as the whole plan: $625/month fills the IRA, while another $625/month goes to a workplace plan or taxable investment account. The Traditional illustration rises to $1,387.50/month only because it assumes every dollar of the calculated federal tax saving is invested.
This scenario is an educational cash-flow model, not personal financial or tax advice. Consult a qualified professional for account-level tax treatment and advice specific to your situation.