• Skip to main content
  • Skip to footer
MENUMENU
  • Home
  • About Us
    • Our Philosophy
    • Choosing a Financial Planner
    • Legal and Regulatory
    • Team
    • Careers
    • Contact Us
  • Our Services
    • Financial Planning
    • Ongoing Financial Guidance
    • Portfolio Management
  • Financial Planning Basics
    • Continuing Care Retirement Communities (CCRCs)
    • Retirement Planning and Cash Flow
    • Social Security
    • Taxes
    • Insurance & Risk Management
    • Investments
    • 401(k)
    • Real Estate
    • College
    • Liquidity
    • Divorce
    • Estate Planning
    • Sensible Updates
  • Resources
    • The Types of People We Help
    • Webinars
    • Blog
    • Videos
    • Financial Planning Guidebook
    • Continuing Care Retirement Communities Guidebook
    • Primers
    • Financial Planning Links
    • Client Links
    • Financial Planning for Older Adults
  • Contact Us
Sensible Financial Planning

Sensible Financial Planning

Follow Us

  • Facebook
  • LinkedIn
  • Twitter
  • YouTube
Client Links

Call Us Today
781-642-0890

Should You Have a Backup Budget? (part 2)

by
Frank Napolitano
J.D., CFP®, CFA® Charterholder - Senior Financial Advisor


Gyb Spilsbury
CFP® - Financial Advisor

January 25, 2022

In this article we’ll discuss how to think about measuring risk capacity in terms of living standard risk. We’ll then show you how to create a backup budget and how this exercise can lead to a more nuanced risk capacity analysis.   

We previously wrote about backup budgets here. To summarize, we typically measure risk capacity relative to a household’s current living standard. By using a backup budget (modified consumption budget) instead, we can be more precise when determining a household’s risk capacity. Using this approach, households with consumption flexibility may find that they can “afford” more risk. If your household has a flexible view of consumption spending, taking time to figure out your backup budget offers a more precise measure of risk than simply guessing.  

How does living standard factor into risk capacity analysis?

Sensible Financial asks all clients to complete a consumption budget. This worksheet supports estimates of a household’s current consumption spending or living standard.  

When we create a financial plan, we first fund “committed” spending, including housing costs, taxes, insurance, and special expenses like childcare and college. We then solve for a client’s sustainable living standard. That is the amount a family can afford to spend on consumption assuming an all bond or low-risk investment portfolio. If the current living standard is less than or equal to the sustainable living standard, the client is living within their means.  

Unless a household invests solely in government bonds, its sustainable living standard will fluctuate with stock returns from year to year. Sensible can run simulations to show how a household’s living standard might fluctuate given different allocations between stocks and bonds. We categorize returns as “good” (the best 25% of market trajectories), “average” (the best 50%) or “poor” (95% of trajectories are better). We recommend clients focus on the “poor” markets projections to determine whether a given allocation to stock is affordable. If spending in poor markets would be less than its current living standard, a household might wish to choose a less risky portfolio. We can illustrate this with a simple example. 

Assume the Gucci household fills out a budget and estimates they are spending $75,000 per year on consumption. After an analysis, Sensible Financial determines that their sustainable living standard is $90,000. The Guccis live large (by their own admission), but are still living within their means. Assuming they invest only in bonds, they can spend an additional $15,000 per year every year for their lives. But what if they invest their financial assets in some mix of stocks and bonds? We can show them a range of living standard outcomes by running their plan hundreds of times and changing only the performance of the stock market. Below we’ve illustrated the results of their financial plan with four different stock allocations: 25%, 40%, 60% and 90%. 

 

Using their current living standard and poor markets to measure risk capacity, they can afford as much as 40% stock without risking a reduction to their current living standard. Spending $82,000 per year (bold outlined cell) exceeds their current spending of $75,000. By contrast, a 60% or 90% stock portfolio would require them to reduce spending if market returns were poor. In order to maintain their current spending, the Guccis should invest no more than 40% of their portfolio in stock.  

But what if the Guccis decide that $75,000 is not the correct minimum living standard? After all, they are “living large.” If their investment returns were poor, they believe they could find acceptable ways to reduce spending. A backup budget allows for a more accurate measure of their risk capacity.   

How do you calculate your own backup budget? 

To create a backup budget, review all the categories of spending in your current budget, line by line, and determine which, if any, you could reduce and by what amount. Some categories will be less flexible than others. Perhaps spending on groceries and cell phone plans are relatively inflexible. Other expenses, such as gifts to family and club memberships, may be more flexible.  

The Guccis review their consumption budget and identify the below categories as flexible.  They then calculate how much they could reduce spending in each category based on their preferences.  

The Guccis determine they could afford to spend $26,000 less on their current living standard. This leads to a backup budget of $49,000 ($75,000 minus $26,000). With their backup budget in hand, the Guccis can reassess their risk capacity.  

Measuring risk capacity with a backup budget 

Returning to the simulation analysis with the Gucci’s new backup budget, they can now afford as much as a 90% stock portfolio. Even if markets were poor (highlighted cell), in 95% of simulated futures they could spend at least $49,000, which equals their backup budget level. 

This analysis is a simplified version of the approach we take with clients. We use a complex market simulation entailing many assumptions. We discuss them in detail with clients when we help them determine their risk capacity. Sensible Financial does not recommend to clients how much risk they can afford. We provide supporting analysis to help clients make that decision. We hope this series of articles gives you a better sense of how we measure risk capacity and whether a backup budget might be a useful approach for you and your family. If you would like to discuss your backup budget, or any aspect of this article, please contact your advisor.  

Read part 1 of Backup Budgets here.

Photo by Mick Haupt on Unsplash

More articles by Frank Napolitano and Gyb Spilsbury Filed Under: Investments Tagged With: backup budget, living standard, risk capacity, Stock Market

Footer

Services

  • Financial Planning
  • Financial Guidance
  • Portfolio Management

About Us

  • Our Philosophy
  • Team

Resources

  • Blog
    • The Types of People We Help
  • Financial Planning Guidebook
Sign up for our Newsletter

Follow Us

  • Facebook
  • LinkedIn
  • Twitter
  • YouTube

Locations

Massachusetts

203 Crescent Street, Suite 404

Waltham, MA 02453

Phone: (781) 642-0890
Fax: (781) 810-4830

 

California

600 B Street, Suite 300

San Diego, CA 92101

Phone: (619) 573-4131​

Disclaimer

This content reflects the opinions of Sensible Financial®. We may change it at any time without notice. We provide this content for informational purposes only. Although we endeavor to keep the information up-to-date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability for a particular purpose or availability with respect to the website or the information, products, services, or related graphics contained on the website for any purpose. We do not intend the information contained in this website as investment advice and we do not recommend that you buy or sell any security. We do not guarantee that our statements, opinions or forecasts will prove to be correct. Past performance does not guarantee future results. You cannot invest directly in any index. If you attempt to mimic the performance of an index, you will incur fees and expenses which will reduce returns. All investing involves risk. You can lose any money you invest. There is no guarantee that any investment plan or strategy will succeed.

More important additional information and full disclaimer.

Copyright © 2025 Sensible Financial · All Rights Are Reserved
Legal Disclosure