# RetireCrunch Calculators Muse connector

From musedirectory.ai, the independent directory of Meta Muse connectors. Not affiliated with Meta.

## RetireCrunch Calculators

FIRE and retirement calculators with portfolio rebalancing for multi-currency investments.

- Record: https://musedirectory.ai/connector/retirecrunch-calculators
- Category: Finance & Bills
- Developer: retirecrunch.com
- Muse status: Extra setup. Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
- Health: Working, 75ms, checked 2026-09-28T08:45:51Z
- Endpoint: https://mcp.retirecrunch.com/mcp
- Auth: No account needed; Pricing: unknown
- Screening: Screened, no issues found (2026-09-24T18:41:16Z)
- Source: Found in the official MCP Registry (com.retirecrunch/calculators) https://registry.modelcontextprotocol.io/v0/servers?search=com.retirecrunch%2Fcalculators

Retirement planning tools including FIRE target estimation, Coast FIRE milestones, Swiss property tax calculation, year-by-year wealth projections, and multi-currency portfolio rebalancing with exact buy/sell trades.

Example request: "Calculate how much I need to save to retire in 15 years with my current spending and investment returns."

How to connect: Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use RetireCrunch Calculators to help me. It is a free service with an MCP server at https://mcp.retirecrunch.com/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.

Tools:
- calculate_fire_target: Estimate the savings target needed for Financial Independence / Early Retirement. Runs Monte Carlo simulation and returns the probability the portfolio survives the planning horizon.
- calculate_coast_fire: Compute the Coast FIRE milestone — the capital required today such that, with no further contributions, a portfolio compounds to the user's retirement target by their target age.
- compute_swiss_property_tax: Estimate the Swiss cantonal real-estate capital gains tax (Grundstückgewinnsteuer) for a property sale. Covers all 26 cantons with holding-period adjustments and Ersatzbeschaffung (replacement-residence) deferral. Educational estimate; commune surcharges and value-enhancing-impro
- project_wealth_plan: Run RetireCrunch's full year-by-year Wealth Plan projection for a household. Models earned income, pensions, expenses, portfolio growth, optional growth→income phase switch, mortgage amortization, optional property sale, and region-aware tax (US uses 2026 federal+state brackets; 
- get_portfolio_returns: Return RetireCrunch's historical portfolio return profiles for a currency. Each profile is a (return %, volatility %) pair derived from real index data — useful for grounding the assumptions in calculate_fire_target / project_wealth_plan in something defensible rather than guessi
- rebalance_portfolio: Rebalance a multi-currency portfolio: given holdings, per-holding (or per-asset-class) target weights, cash and FX rates, return the exact BUY/SELL trades to reach the targets, the per-currency cash movements (flagging foreign-cash overdrafts), and a summary. Planning math only —

Screening checks:
- MCP handshake: pass (Answered in 702ms)
- Domain against threat feeds (Cloudflare security DNS): pass (mcp.retirecrunch.com not flagged)
- Published packages against the OSV malicious-package database: n/a (No npm or PyPI package published)
- Hidden instructions or invisible characters in tool text: pass (6 tools read, nothing found)
- Inputs asking for passwords, card numbers or seed phrases: pass (None found)
- Domain and redirects: pass (Domain registered 229 days ago)
- AI review of purpose and tool behavior: pass (No concerns)