# FIRE Calculator MCP MCP > The FIRE Calculator determines your path to Financial Independence, Retire Early. It calculates the exact net worth you need based on your desired lifestyle—whether that's a lean budget or a comfortable standard living. You can then model how adjusting your monthly savings rate changes your projected retirement date. ## Overview - **Category:** finance - **Price:** Free - **Tags:** fire, retirement, financial-independence, savings, investment ## Description Figuring out when you can retire isn't just about checking balances; it’s about modeling risk and defining goals. This MCP lets you project your timeline to Financial Independence (FI). First, you set the target by determining the net worth required for different lifestyles—you pick whether you want Lean FIRE or Fat FIRE, and the tool shows you the number. Next, you map out the milestones needed to hit that goal. Finally, you test how changing your current monthly savings rate impacts everything. By running these simulations, you see exactly how much time increasing your contribution buys you. It uses the industry-standard 4% rule for realistic projections based on expected returns. Vinkius hosts this MCP so your agent can access it from any compatible client. ## Tools ### calculate_milestones Determines the key financial checkpoints you must hit along your journey to retirement. ### get_lifestyle_targets Calculates the necessary total net worth based on different spending goals, from lean budgets to comfortable living. ### simulate_contribution_impact Shows how changing your monthly savings rate affects your projected timeline and retirement date. ## Prompt Examples **Prompt:** ``` How much net worth do I need to retire if I want to spend $5,000 per month? ``` **Response:** ``` To sustain a monthly spending of $5,000 ($60,000 annually), you will need a target net worth of $1,500,000 based on the 4% rule. ``` **Prompt:** ``` If I increase my monthly savings from $1,000 to $2,000, how much time will I save? ``` **Response:** ``` Increasing your contribution from $1,000 to $2,000 will accelerate your path to financial independence by approximately 8 years. ``` **Prompt:** ``` Show me the wealth targets for different FIRE lifestyles based on $3,000 monthly expenses. ``` **Response:** ``` Based on a $3,000 monthly baseline, your targets are: Lean FIRE: $720,000; Standard FIRE: $900,000; Barista FIRE: $1,080,000; and Fat FIRE: $1,440,000. ``` ## Capabilities ### Determine target wealth Calculates the required net worth needed to support a specific spending level, defining goals for different lifestyle tiers. ### Project retirement milestones Maps out key financial checkpoints and progress points on your journey toward Financial Independence. ### Assess savings impact Runs simulations showing how changes to your monthly contribution rate accelerate or delay your projected timeline. ## Use Cases ### I don't know if I can retire when I want. An analyst asks their agent to run the MCP. They use `get_lifestyle_targets` first to figure out they need $1.2 million for their desired spending level. Next, they check `simulate_contribution_impact`, discovering that increasing savings by just $500 a month cuts their retirement date by four years. ### I want to save more but don't know the payoff. A professional inputs their current savings rate into the tool. The MCP then uses `calculate_milestones` to show them a clear, visual roadmap of checkpoints they need to hit over the next decade. ### I need to compare retiring early versus standard retirement. The user runs two parallel analyses: one for Standard FIRE and another for Barista FIRE. Comparing the output from `get_lifestyle_targets` instantly shows them the massive difference in required net worth. ## Benefits - You immediately know what you need. Instead of vague advice, the tool uses `get_lifestyle_targets` to give you a specific dollar amount for any retirement lifestyle you pick. - Pinpoint exactly how much time money buys. By running simulations with `simulate_contribution_impact`, you see the year-by-year difference between saving $1k vs. $2k per month. - See your progress mapped out. The MCP uses `calculate_milestones` to break a massive financial goal into manageable, actionable steps. - Test different scenarios risk-free. You can adjust variables like expected returns or inflation rates without changing any real numbers; it's all simulation. - It grounds the conversation in math. Because it relies on the 4% rule and defined milestones, you get advice backed by financial formulas, not hope. ## How It Works The bottom line is that it translates lifestyle desires into concrete numbers and achievable timelines. 1. Input your desired annual spending amount and selected lifestyle tier (e.g., Standard FIRE). 2. The MCP uses the 4% rule to output a specific target net worth figure, setting your financial goal. 3. You then adjust variables like current savings rate or investment returns to simulate impact and see when you hit the required milestone. ## Frequently Asked Questions **What is the 4% rule?** The 4% rule is a guideline suggesting that you can withdraw 4% of your initial retirement portfolio annually, adjusted for inflation, with a high probability of the funds lasting at least 30 years. **How do I use `calculate_milestones`?** You can use `calculate_milestones` by providing your current net worth, monthly contributions, expected real annual return, and target monthly retirement expenses to see when you will reach independence. **What are the different FIRE tiers?** The calculator supports various lifestyles including Lean FIRE (minimalist), Standard FIRE (baseline), Fat FIRE (affluent), and Barista FIRE (supplemented income). **How does `get_lifestyle_targets` account for inflation over time?** It adjusts future costs using an inflation rate you specify. The resulting target net worth is calculated based on your desired real spending power, not just current dollar amounts. **What happens if I use `simulate_contribution_impact` with a negative savings rate?** The simulation will flag the goal as unattainable. It requires positive contributions to calculate an accelerated timeline; it can't project success from losses. **Are there limits when I use `calculate_milestones` for very long time horizons?** The MCP efficiently handles standard retirement timelines, often spanning decades. For extremely complex, multi-century simulations, the client might prompt you to break it into segments. **Can `simulate_contribution_impact` factor in different types of investments (e.g., bonds vs stocks)?** You must input your expected real rate of return based on your overall portfolio mix. The MCP uses that single, projected number to run the entire simulation. **What initial data do I need before running `calculate_milestones`?** You need three key inputs: your current savings amount, expected annual return, and your desired withdrawal rate. These figures are necessary for the model to run any calculation.