Optimal Finance Daily – Episode 3308: “Interesting Financial Rules to Follow” by J. Money
Host: Diania Merriam
Air Date: October 6, 2025
Featured Blogger: J. Money (BudgetsAreSexy.com)

Episode Overview

In this episode, host Diania Merriam narrates and comments on J. Money’s exploration of common financial “rules of thumb” and how they compare to real-life budgeting experiences. The discussion is practical and honest, zooming in on whether or not these oft-repeated financial guidelines actually help, how flexible they ought to be, and what matters in building long-term financial security and independence.

Key Discussion Points & Insights

1. Financial Rules of Thumb: Overview

• J. Money reflects on familiar and lesser-known financial “rules,” suggesting most people hear these rules but rarely follow them to the letter.
• Diania adds her own experience and critical perspective to each rule, noting the usefulness and potential pitfalls of strictly adhering to generic advice.

2. Rule-by-Rule Breakdown

a) Spending and Saving Percentages

• Rule: Spend no more than half of your income on living expenses; keep discretionary items to 30% and save the rest.
• J. Money’s take (02:31):
  • “People sure would be better off if they followed this, but I have yet to run into anyone who actually budgets off of percentages.”
  • Instead, he personally cuts back wherever possible each month and stashes away savings, estimating his own allocation is around 60% living expenses, 20% discretionary, 20% savings.
• Key Insight: Percentages make theoretical sense, but many find it more useful to focus on cutting back in as many areas as possible and maximizing savings as finances allow.

b) Home Affordability

• Rule: You can afford a home that’s two to four times your gross annual income.
• J. Money (03:21):
  • “Well, this one should be an easy one to compare since we literally just bought a house. Doing the math on this bad boy pushes us out into the $320,000 to $640,000 range, where I’m glad to see we’ve landed way on the lower end of the scale here.”
  • Cautions listeners: Banks may approve you for far more than is wise (“…the banks are happy to loan out as much as they can get away with… don’t fall for that trick…”).
• Diania’s Commentary (09:44):
  • “I definitely disagree with this for a number of reasons… To base affordability on income is incredibly risky from my perspective because you could lose your income at any moment.”
  • She prioritized paying off debt, fully funding retirement, building a cash cushion before buying, and ultimately chose a much lower mortgage ($600/month).
• Key Insight: Don’t base affordability on the maximum the bank offers—prioritize financial flexibility and security.

c) Life Insurance Needs

• Rule: Hold life insurance equal to 8–10 times your pre-tax annual income.
• J. Money (04:00):
  • “No idea where this figure comes from, but if we stayed in line with it, we’d need …$640,000 to $800,000 each, of which we’d massively fail since we only have $350,000 each.”
  • The amount was originally set to cover the mortgage, and he considers reassessing now that circumstances have changed.
  • Raises a philosophical question about insurance as it relates to financial independence: “Isn’t the point of financial freedom to be fully sufficient without needing outside help unless you wanted it?”
• Key Insight: Coverage may need regular reassessment and should evolve as you build wealth and approach financial independence.

d) College Savings Rule

• Rule: Save one third of the cost of college; pay a third from current income and financial aid; borrow the last third.
• J. Money (05:20):
  • “I’ve just always gone with the save as much as you’re able to route, and we’ll figure it out later when it gets closer.”
  • Recognizes the challenge in preemptively planning for college costs but encourages saving what you can.
  • “If you’re at least saving something towards it, you’re allowed to be semi-proud of yourself.”
• Key Insight: It’s unrealistic for many to follow this rule exactly—consistency and effort matter just as much.

e) Retirement Income Needs

• Rule: You’ll need 70–80% of your pre-retirement income to live on in retirement.
• J. Money (06:12):
  • “Oh boy, the magical retirement number… pay attention to the expenses of your future planning, not your income…”
  • Highlights FIRE (Financial Independence Retire Early) community rule: accumulate 25x your projected annual expenses.
  • “You can very well be poor with a million dollars… or rich with $10,000… all depending on the quality of lifestyle you want or need later on.”
• Key Insight: Focus retirement planning on future expenses, not replacing current income—the right number is personal and flexible.

Notable Quotes & Memorable Moments

• J. Money on Percentages:
  "People sure would be better off if they followed this, but I have yet to run into anyone who actually budgets off of percentages." (02:31)

• J. Money on Mortgage Approval:
  “...don't fall for that trick like many of us have over the years. You need life insurance equal to 8 to 10 times..." (03:42)

• J. Money’s Philosophical Musing:
  “Isn’t the point of financial freedom to be fully sufficient without needing outside help unless you wanted it?” (04:34)

• J. Money on Saving for College:
  “If you’re at least saving something towards it, you’re allowed to be semi-proud of yourself. At least that's the rationalization I'm telling myself.” (05:56)

• J. Money on Retirement Planning:
  “Pay attention to the expenses of your future planning, not your income... all depending on the quality of lifestyle you want or need later on.” (06:20)

• Diania Merriam on Home Affordability:
  “To base affordability on income is incredibly risky from my perspective because you could lose your income at any moment... buy the least expensive and smallest house that is comfortable because my overall goal is to keep my fixed costs as low as possible.” (09:47)

Timestamps of Key Segments

• [01:36] — J. Money introduces the concept of breaking (or following) financial “rules of thumb”
• [02:31] — Discusses spending/saving percentage rule and personal approach
• [03:21] — Home affordability rule and thoughts on bank lending limits
• [04:00] — Life insurance recommendations and reflections on financial independence
• [05:20] — College savings advice and realistic perspectives on saving
• [06:12] — Retirement needs: income-based vs. expense-based calculations
• [09:44] — Diania Merriam’s commentary on determining true home affordability and her own financial milestones

Tone & Style

• The episode effortlessly blends practical financial advice with humor and realism. Both J. Money and Diania admit that many rules, while theoretically sound, are difficult to practice exactly—and that personal circumstances demand flexibility.
• Diania’s closing remarks encourage listeners to keep their core needs low, especially in housing, transportation, and food, to improve resilience and option value over time.

Summary

This episode tackles influential financial “rules of thumb,” acknowledging their educational value while challenging listeners to adapt them to their own realities. Listeners are urged to build flexibility, question one-size-fits-all advice, and focus on foundational habits: saving diligently, reviewing actual needs versus rules, keeping fixed costs as low as comfortable, and making financial freedom a personal journey defined by expenses and lifestyle, rather than arbitrary benchmarks or lender assessments.

For anyone exploring personal finance, early retirement, or simply trying to get a handle on budgets, this episode is a relatable, candid resource—packed with both strategy and permission to do what works for you.