Knowing how much you need to save each month is the cornerstone of retirement planning. This calculator uses the 4% rule to determine your target nest egg, projects how your current savings will grow, and calculates the exact monthly contribution needed to bridge any gap by your retirement date.
Enter Your Measurements
Results
Target Nest Egg (4% Rule)
1,250,000
$
Required Monthly Savings
545.84
$
Formula
How to Use This Calculator
How to Use
- 1
Enter your current age and target retirement age.
- 2
Enter your current retirement savings balance.
- 3
Enter your annual salary and desired annual retirement income.
- 4
See your target nest egg and required monthly savings to reach it.
Frequently Asked Questions
Frequently Asked Questions
What is the 25x rule for retirement?
Should Social Security reduce my target?
In-Depth Guides
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401(k) Contribution Guide: How Much to Contribute in 2026
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The 4% Rule: Safe Withdrawal Rate Guide for Retirement
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Social Security Benefits: When to Claim and How Much
Learn how Social Security benefits are calculated, when to claim for maximum lifetime income, spousal benefits strategy, and break-even analysis for claiming age.
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About This Calculator
This calculator uses the formula: Target Nest Egg = Desired Annual Income × 25 (4% Rule) Required Monthly Savings = Gap × r / [(1+r)^n − 1]. All calculations follow industry-standard methods. Results are estimates — always verify with a licensed professional for structural or code-compliant work.
Built and maintained by the CalcSmart team. Last updated March 2026.
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