MCP server

SavingsLast retirement calculators Official

com.savingslast/calculators

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Retirement drawdown, 72(t) SEPP, RMD, Roth conversion, Social Security and state-tax calculators.

Website Source

At a glance

Type

MCP server

Publisher

savingslast.com (verified by the MCP Registry)

Status

Working at last check

Tools

15

Token cost

About 6,307 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http calculators https://savingslast.com/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.calculators]
url = "https://savingslast.com/mcp"

Gemini CLI

{"mcpServers":{"calculators":{"httpUrl":"https://savingslast.com/mcp"}}}

Cursor

{"mcpServers":{"calculators":{"url":"https://savingslast.com/mcp"}}}

VS Code

{"servers":{"calculators":{"type":"http","url":"https://savingslast.com/mcp"}}}

Antigravity

agy mcp add calculators https://savingslast.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"calculators","server_url":"https://savingslast.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"calculators","server_url":"https://savingslast.com/mcp"}

Tools

• bridge_to_59_half ~706 tokens
  How an early retiree pays for the years between leaving work and 59 1/2, one year at a time, under three strategies: taxable first with a Roth conversion ladder, a 72(t) series on a carved-off IRA, or a blend. Each year pays spending and federal tax from the sources the strategy allows, converts wha
• federal_tax_estimate ~481 tokens
  A retiree's federal income tax for tax year 2026: the taxable share of Social Security (the Publication 915 worksheet), the standard deduction with the 65-plus additions and the senior deduction phase-out, ordinary brackets, the 0/15/20% stack for long-term gains and qualified dividends, the 3.8% ne
• fetch ~119 tokens
  The full text of one savingslast.com page as markdown, by id from search, by slug, or by URL. Every calculator page carries its explanation, worked figures and FAQ; guides carry the article.
• how_long_will_money_last ~951 tokens
  Month-by-month drawdown of a retirement balance: how many years the money lasts at a monthly withdrawal that rises with inflation, the age it runs out, the odds of being alive then, and the most that could be withdrawn to last 20, 25 or 30 years. Optional account rules apply the early-withdrawal pen
• inherited_ira_schedule ~344 tokens
  A withdrawal schedule for a non-spouse heir under the 10-year rule: the level annual withdrawal that empties the account exactly at the deadline, year-by-year balances and tax at a flat rate, and, when the owner had already started required distributions, the annual minimums for years one to nine un
• list_pages ~129 tokens
  Every page on savingslast.com with its URL, title, description and section, optionally one section only. Sections: Calculators; How long will a balance last; Reference; Retirement taxes by state; Social Security; Can I retire at an age; Guides.
• pension_lump_sum_vs_annuity ~308 tokens
  Compares a pension's lump-sum offer with its monthly annuity: the payout rate the pension implies, the age the invested lump sum runs out paying the same amount, the steady return the lump sum must earn to match the pension to a planning age, and the odds of being alive at each point on the IRS unis
• rmd_calculate ~340 tokens
  The required minimum distribution for a year from a traditional IRA, 401(k) or similar account: the prior 31 December balance divided by the IRS Uniform Lifetime Table factor at the age reached that year, with the required beginning age from the birth year (72, 73 or 75 under SECURE 2.0), the due da
• roth_conversion_cost ~698 tokens
  What converting an amount from a traditional IRA or 401(k) to a Roth costs in federal tax for 2026, on top of everything else that year, including the extra Social Security it makes taxable and the senior deduction it phases out. Also: how much fits under each bracket ceiling from today's position,
• search ~131 tokens
  Full-text search across every page on savingslast.com: the calculators, the guides, the Social Security pages, the state retirement-tax pages and the reference pages. Returns ids to pass to fetch.
• sepp_72t_lock_in_end ~163 tokens
  The date a 72(t) series may be changed without the recapture penalty: the later of five years from the first payment and the owner reaching 59 1/2, computed in calendar months the way the IRS does (six months after the 59th birthday, not 0.5 years).
• sepp_72t_payment ~634 tokens
  The annual 72(t) substantially equal periodic payment under all three IRS methods in Notice 2022-6: fixed amortization, fixed annuitization and required minimum distribution, using the 2022 life-expectancy and mortality tables. Reproduces the IRS's own published examples to the dollar (see https://s
• social_security_claiming ~337 tokens
  What claiming Social Security at each age pays, from 62 to 70, using the statutory reduction (5/9 of 1% a month for the first 36 months early, then 5/12 of 1%) and delayed retirement credits (2/3 of 1% a month to 70); the cumulative benefit by age with an optional COLA; the break-even ages between c
• state_retirement_taxes ~158 tokens
  How a US state taxes retirement income: Social Security, pensions, and IRA and 401(k) withdrawals, plus the estate or inheritance tax, sales and property tax levels, and an estimated effective state income tax on $40,000 of withdrawals for a 65-year-old single filer. All 50 states and DC. Give a sta
• sustainable_withdrawal ~808 tokens
  The largest starting monthly withdrawal, rising with inflation, that a balance can support for a chosen number of years at a given return, inflation and tax rate. Solved by bisection on the same drawdown engine.

Browse

• Converting to Markdown
• Calendars
• Payments

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