How to Tell Whether Your Financial Plan Is Working
Your financial advisor may use software to help calculate your plan’s probability of success. The software can also help your advisor determine how adjusting the plan could potentially improve its chances of succeeding. Suppose a few changes could increase your financial plan’s probability of success from 82% to 90%. Does that mean your plan is automatically healthier?
Possible adjustments could include stronger savings, lower spending, reduced debt, or a better balance between risk and return. The increased probability of success may also reflect a delayed retirement date, the removal of a goal, or a change in assumptions.
A decline can be just as revealing. You may want to retire earlier, help family, give more to charity, or use more of your wealth during their lifetime. Those choices may lower the probability while bringing the plan closer to the life you actually want.
Probability of success is useful, but the percentage becomes more meaningful when you understand what is driving it.
Probability of Success Is a Starting Point
Monte Carlo analysis estimates how often a strategy may support a client’s goals across many simulated market outcomes. It can show whether the household has a reasonable margin for uncertainty, but a higher percentage is not always the objective.
Two households with the same probability may face very different risks. One plan may depend on a business sale at a particular value, strong returns early in retirement, or a future downsizing decision. Another may offer several workable options, such as adjusting discretionary spending, changing the timing of retirement, or drawing from a different account.
The second household may be better prepared even when its headline percentage is no higher.
This is especially important when your financial position is already strong. Planning may then focus less on maximizing the probability and more on how much of your wealth you can spend, gift, or redirect toward other priorities while accounting for unexpected events.
Look at What the Plan Requires
Before retirement, your savings rate can show whether you are steadily building capacity or relying on substantial catch-up contributions later. In retirement, your projected withdrawal rate can indicate how much pressure spending may place on your portfolio.
There is no universally correct direction for either measure. A higher withdrawal rate may be reasonable during your active early-retirement years, particularly when you expect later spending to decline or your Social Security and pension benefits to begin.
Cash flow matters too. How much spending is essential, and how much could be adjusted? Will dependable income cover a meaningful share of core expenses? Do you have enough liquidity to avoid selling investments at an inconvenient time?
The mix of account types can also affect flexibility. Taxable, tax-deferred, and Roth assets may provide different ways to fund a large purchase, manage future tax exposure, or adapt to changes in tax law. A strategy such as a Roth conversion may create a higher tax bill today while expanding options later.
A plan that offers several ways to adjust may be stronger than one with a higher probability but little room for change.
Test Your Plan Against Reality
Initial projections often rely on rough figures. Spending may be estimated, Social Security or pension benefit amounts may be preliminary, and healthcare costs, taxes, or the timing of a home sale may remain uncertain.
As better information becomes available, you can update your plan using actual expenses, tax returns, account values, benefit estimates, and decisions you have made. That process may reveal greater capacity than you expected or show that certain goals place more pressure on your household’s resources.
Scenario analysis can then test how your plan performs under different conditions. What changes if retirement begins a year earlier? What if investment returns are weaker early in retirement? How would a larger charitable gift, more family support, or a Roth conversion affect the resources available for other goals or future decisions?
These tests help identify which assumptions matter most and where adjustments are possible. They also reduce the risk that your plan depends too heavily on any one event, estimate, or decision.
A stronger financial plan reflects your priorities, is grounded in realistic information, accounts for uncertainty, and offers more than one path forward as circumstances change.
A financial advisor can help refine the assumptions, interpret how your plan is changing over time, and determine whether a shift in probability reflects greater risk, a more accurate picture of your household’s finances, or a deliberate choice that better aligns your strategy with your goals.
Edward R. Jastrem
Senior Planning Specialist
CFP®, ChFC®, CMFS, CLTC®, CRPC®, AWMA®, MS