What is My SWP Calculator?
My SWP Calculator is an online tool designed to help investors plan and calculate systematic withdrawal amounts from their investment portfolios. A Systematic Withdrawal Plan (SWP) allows you to withdraw a fixed amount or percentage from your investments at regular intervals, typically monthly or quarterly. This calculator helps you determine sustainable withdrawal amounts based on your current portfolio value, expected returns, and time horizon. It's particularly useful for retirees, early retirees, or anyone managing passive income from investments who needs to understand how long their capital will last and what regular income they can safely draw.
Key Features
Portfolio withdrawal calculations
Input your current portfolio value and calculate how much you can withdraw regularly
Time horizon analysis
See how long your portfolio will sustain regular withdrawals based on assumed returns
Inflation adjustment
Account for inflation's impact on purchasing power over time
Scenario modelling
Test different withdrawal amounts and return rates to find sustainable strategies
Regular withdrawal schedules
Calculate monthly, quarterly, or annual withdrawal amounts
Pros & Cons
Advantages
- Free to use with no registration required for basic calculations
- Helps you plan realistic retirement income without depleting capital too quickly
- Simple interface makes SWP planning accessible to non-financial professionals
- Considers inflation, which matters for long-term financial planning
Limitations
- Results depend on accurate input assumptions; small errors in expected returns can significantly affect projections
- Cannot account for unexpected expenses, market crashes, or major life changes that require portfolio adjustments
- Limited guidance on what return rates or withdrawal percentages are actually realistic for different asset allocations
Use Cases
Calculating sustainable monthly income from a lump sum investment or pension pot
Testing whether a portfolio will last through retirement without running out of money
Comparing different withdrawal strategies to find the right balance between income and capital preservation
Planning for early retirement by modelling various withdrawal scenarios
Adjusting withdrawal amounts when market conditions or personal circumstances change