QuantCalc Retirement Engine

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

• Connection: Runs in the cloud
• Transport: Streamable HTTP
• Category: Accounting, finance & tax

Install

Pick the AI app you use, then copy the settings.

You need

• Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

https://mcp.quantcalc.app

claude mcp add --transport http retirement-engine https://mcp.quantcalc.app

{
  "mcpServers": {
    "retirement-engine": {
      "url": "https://mcp.quantcalc.app"
    }
  }
}

{
  "servers": {
    "retirement-engine": {
      "type": "http",
      "url": "https://mcp.quantcalc.app"
    }
  }
}

https://mcp.quantcalc.app

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.

• run_retirement_projection

  Runs a Monte Carlo retirement projection on the QuantCalc engine and returns the success rate, the ending-portfolio distribution, and the assumptions that produced them. The result states the return model that ran, the number of paths, and the income assumptions it used, includin

• run_tax_aware_projection

  Runs the retirement projection with the household's accounts split by tax type and returns the withdrawal order and Roth-conversion programme the engine selected, its present-value advantage and range against drawing traditional first, and the after-tax success rate. Federal and

• compare_return_assumptions

  Runs the same plan against several published capital market assumption sets and returns the success rate and median outcome under each, showing how far the answer moves with the return forecast used. Every input is optional: omitted plan inputs use an illustrative plan (age 65, $

• list_return_assumption_sources

  Returns the published capital market assumption sets the engine carries and which components each publisher provides (returns, volatilities, correlations).

• explain_methodology

  Returns what the QuantCalc engine models and what it deliberately leaves out, including the tax provisions that are out of scope, and links to the published methodology.

• estimate_2026_tax_return

  Estimates a household's 2026 federal and state income tax return from its 2026 income (wages, Social Security, IRA and 401(k) distributions, pensions, Roth conversions, interest, dividends, capital gains and losses, self-employment (Schedule C) profit), deductions, withholding an

• optimize_social_security_claiming

  Searches every Social Security claiming age from 62 (or today's age) to 70 for the household's tax-aware plan: each age's benefit is the given benefit restated by the SSA reduction and delayed-retirement-credit rules, and each age runs the full tax-aware plan on the same simulate

• state_tax_in_every_state

  Figures one household's 2026 state income tax in all 50 states and DC from its income (Social Security, IRA and 401(k) withdrawals, a private or government pension, military retirement pay, wages, interest, dividends, long-term gains) and returns every jurisdiction ranked from th

• calculate_2026_income_tax

  Figures a household's 2026 federal income tax (Form 1040 line 24) and, given a state, its state income tax, from wages (with the Schedule 1-A overtime and tips deductions), children and other dependents, and other common income; and returns the Social Security and Medicare tax on

• pretax_contribution_savings

  Figures what a 2026 (or projected 2027) health FSA or HSA contribution saves in federal income tax, Social Security and Medicare tax and state income tax: the same return with and without the contribution, a payroll contribution taken out of W-2 boxes 1, 3 and 5, a direct HSA con

• business_deduction_tax_savings

  Figures what a business deduction saves a self-employed person in 2026: business miles split at July 1 (72.5 and 76 cents a mile) or a dollar expense, off the Schedule C profit, and the income tax, self-employment tax, earned income credit and state tax saved, from the federal re

• retirement_plan_deferral_savings

  Returns the 2026 or 2027 elective-deferral limit for a 401(k), 403(b), governmental 457(b), the TSP or a SIMPLE IRA at an age (the age-50 and ages 60-63 catch-ups, the SIMPLE higher limit, the Roth catch-up wage rule), free; and what the pre-tax deferral saves in federal income t

• ira_deduction_and_roth_limit

  Runs IRS Publication 590-A Worksheet 1-2 (the deductible part of a traditional IRA contribution when you or your spouse is covered by a plan at work) and Worksheet 2-2 (the reduced Roth IRA contribution limit) for 2026 or 2027 on a modified AGI, line by line, with the spousal IRA

• standard_deduction_vs_itemizing

  Returns the 2026 or 2027 standard deduction piece by piece — the basic amount, the additional amount for 65 or older and blind, a dependent's limit, the married-filing-separately rule — free; and, with a connected QuantCalc PRO licence or Tax Season Pass, the senior deduction aft

• calculate_rmd

  Computes the required minimum distribution for 2026 or 2027 from the prior year-end balance and the age or birth year, on the IRS Uniform Lifetime Table, or the Joint and Last Survivor Table when the spouse is the sole beneficiary and more than 10 years younger; returns the divis

• roth_conversion_tax_cost

  Figures the federal and state tax a 2026 Roth conversion adds to the household's year, its share of the amount converted and the cost of the next $1,000; the room left in the current federal bracket and below the next IRMAA tier; and flags an IRMAA tier crossing (with the 2028 su

• qcd_tax_savings

  Compares a 2026 charitable gift made as a qualified charitable distribution from an IRA with the same gift in cash: the federal and state tax saved and the IRMAA surcharge saved, with the cash gift deducted the way the return allows (itemizing, or the standard deduction with the

• irmaa_check

  Returns the Medicare IRMAA tier a MAGI sets: the official 2026 tier (from 2024 MAGI) and the 2027 and 2028 tiers (from 2025 and 2026 MAGI) on the tables as QuantCalc projects them, labelled projected; with each the monthly Part B and Part D surcharge per person, the annual total

• social_security_taxable_amount

  Figures how much of a household's 2026 Social Security benefits is taxable, the federal income tax and the part of it the benefits cost, the effective marginal rate on the next dollar of other income, how many cents of benefits each extra dollar makes taxable, and which part of t

• capital_gains_tax

  Figures the 2026 federal and state income tax on a household's short-term and long-term capital gains or losses given its other income: the tax the capital items add (ordinary-rate, long-term rate, net investment income tax and AMT parts), the long-term gain that still fits in th

• estimated_tax_payments_2026

  Figures a household's 2026 estimated tax position from its expected 2026 income, its 2025 tax and what it has withheld and paid: the 2026 tax Form 2210 uses, the safe-harbor required annual payment (the smaller of 90% of the 2026 tax and 100% or 110% of the 2025 tax) and the requ

• aca_premium_tax_credit

  Figures a household's ACA marketplace premium tax credit position from its state, the ages on the plan, household size and income. For 2026 coverage: the credit (Form 8962 line 24, computed by QuantCalc's federal tax API) at the state-level or a given benchmark premium, the pover

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 8, 2026

• ✓ Pass

  Maker matches the repo

  The registry name was verified against the domain quantcalc.app (the registry checks domain ownership)

• … Not checked yet

  Still maintained

  We have not read this repo from GitHub yet

• … Not checked yet

  Has a licence

  We have not read this repo from GitHub yet

• ✓ Pass

  Endpoint responds

  Responded in 2253 ms (HTTP 200)

• – Not applicable

  Sign-in with OAuth

  No sign-in needed

• ✓ Pass

  No hidden instructions in tool descriptions

  Read 22 tool descriptions and found no hidden instructions to the AI

Compared with others in Accounting, finance & taxi

• More stars than 0% of the other 2919 servers in this category
• Published to the registry more recently than 83% of the other 2919 servers in this category
• Basic checks equal to or better than 100% of the other 2919 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

README from the maker

https://mcp.quantcalc.app