Retirement Projection Assumptions in SavePoint

Retirement Projection Assumptions in SavePoint

The numbers that come out of retirement projections are only as good as the assumptions that go in. Garbage in, garbage out. Overly optimistic assumptions can leave you unprepared. Overly conservative ones might keep you working longer than necessary.

SavePoint's FIRE Planning module lets you customize the key variables that drive your projections. Understanding what these assumptions mean and how to set them appropriately is crucial for planning you can actually trust.

Expected Return Rate

This is the annual growth rate you expect your investments to achieve over time. The historical average for a diversified stock portfolio is around 7% after inflation, but that's an average. Some decades beat it. Others fall short.

Conservative planners often use 5-6% real returns. Those comfortable with more risk might use 7-8%. The key is being honest about your asset allocation. An 80/20 stock/bond portfolio will behave differently than a 60/40 split.

Inflation Rate

Inflation erodes purchasing power over time. A dollar today won't buy as much in 30 years. Historical U.S. inflation has averaged around 3% long-term, though recent years have seen higher rates.

For retirement planning, 2.5-3.5% is a reasonable assumption range. Higher inflation assumptions produce more conservative projections. If you're concerned about elevated inflation continuing, stress-test your plan with a 4%+ assumption.

Withdrawal Rate

The withdrawal rate is the percentage of your portfolio you plan to spend each year in retirement. The famous "4% rule" suggests that withdrawing 4% annually, adjusted for inflation, has historically been sustainable over 30-year periods.

However, the 4% rule has assumptions: a specific asset allocation, a 30-year time horizon, and historical market conditions that may not repeat. Many FIRE planners use 3.5% or even 3% for more conservative projections, especially for early retirees with potentially 40-50 year time horizons.

Monte Carlo Simulations

SavePoint's Monte Carlo feature runs your scenario through thousands of possible market conditions. Rather than assuming smooth, average returns every year, it introduces realistic volatility and sequence of returns risk.

The output shows the probability of success across different scenarios. A 95% success rate means your plan worked in 95 out of 100 simulated market conditions. Most planners target 85-95% success rates for comfortable confidence.

Adjusting Over Time

Your assumptions don't need to stay fixed. As you get closer to retirement, you might become more conservative. As market conditions change, you might adjust your expectations. The projections are tools for planning, not predictions of the future.

Investment returns are not guaranteed. Past performance does not predict future results. Consider consulting a financial advisor for personalized guidance.