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Free retirement planning tools

Retirement planning tools that show their work

Free tools for retirement planning that name every assumption, source every figure to the IRS or the SSA, and tell you plainly what the result does not mean. No account, and the numbers you type never leave your browser.

A 2026 required minimum distribution

2026 · verified
$18,868

$500,000 ÷ 26.5

26.5 is the IRS Uniform Lifetime Table factor for age 73.

Example: age 73, $500,000 across traditional IRA and 401(k) on Dec 31, 2025. Deadline December 31, 2026.

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Sourced to the primary document

Every factor, limit and threshold traces to the IRS, the SSA or CMS, with the year it applies to and the date it was last checked. Never to another retirement blog.

Your numbers never leave your browser

Every projection runs on your device. What you type is never sent to Tweed, because there is nowhere for it to go. Tweed counts page visits with Google Analytics, which sees the page you are on and not a single field on it.

Every assumption is visible and editable

If a projection depends on a return rate, that rate is on the screen with its source next to it, and changing it takes one click.

Why most retirement calculators feel good and mean nothing

Put your numbers into most retirement calculators and you get a large, encouraging balance. What you usually do not get is the return assumption behind it, whether that return is before or after inflation, or what the same number looks like if the assumption is one point lower.

A default return rate is not a neutral choice. It is a claim about the future, made on your behalf, by someone who will not be affected if it turns out wrong. Almost nobody changes a default, so for most readers the default is the answer.

How these calculators work →

The rules behind the numbers

Plain-English guides to the retirement rules that carry deadlines and penalties. Every figure cited to the IRS, the SSA or CMS.

All guides →

Who writes this

Tweed's calculators and guides are written by Nicolas Straut, a personal and business finance writer and former Forbes contributor. He has spent eight years writing about money and building content for fintech companies including NerdWallet and North One Business Banking.

He is not a financial advisor and not retired, so Tweed makes no claim to know what drawing down a portfolio feels like. What it does claim is narrower and checkable: read the primary document, do the arithmetic correctly, and show both.

More about Tweed, including how it makes money →

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