The Financial “Rules of 72, 78 and 115”

INTEREST RATES

By Dr. David Edward Marcinko MBA

RULE 72

Use the rule of 72 to calculate how long it would take an investment to double. The rule of 72 is that an investment that earns 10 percent interest will double in 7.2 years. Use this as a starting point for calculating various interest rates and lengths of time, by dividing the number 72 by your interest rate.

For instance, if you are investing at a more conservative rate of 5 percent, you’d divide 72 by 5 for a total of 15 years (rounded up) for your money to double.

RULE 78 VIDEO

Link: https://www.bing.com/videos/search?q=rule+78&view=detail&mid=83D794CB83313B56855583D794CB83313B568555&FORM=VIRE

RULE 115

To figure out how long it would take your money to triple, use 115 instead of 72. So at an interest rate of 3 percent, it would take 38 years (115/3), for your initial amount to triple.

RULE OF 4: https://medicalexecutivepost.com/2022/01/30/podcast-the-four-percent-spending-rule-with-challenge/

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Comprehensive Financial Planning Strategies for Doctors and Advisors: Best Practices from Leading Consultants and Certified Medical Planners™

PODCAST: The FOUR PERCENT Spending Rule with Challenge?

Still Valid or Not?

PLUS the “RULES of 72, 78 and 115″ Explained”

By Staff Reporters

SPONSOR: http://www.CertifiedMedicalPlanner.org

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What Is The 4% Rule? How Much Money Do I Need To Retire? - YouTube

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The 4% Rule is a practical rule of thumb that may be used by retirees to decide how much they should withdraw from their retirement funds each year; according to Investopedia.

READ: https://www.investopedia.com/terms/f/four-percent-rule.asp#:~:text=The%20Four%20Percent%20Rule%20is%20a%20rule%20of,account%20balance%20that%20keeps%20income%20flowing%20through%20retirement.

The purpose of adopting the rule is to keep a steady income stream while maintaining an adequate overall account balance for future years. The withdrawals will consist primarily of interest and dividends on savings.

CITE: https://www.r2library.com/Resource/Title/082610254

READ: https://www.financial-planning.com/news/kitces-smart-fix-for-the-4-rule#:~:text=The%20purpose%20of%20the%204%25%20rule%20is%20to,when%20it%20provides%20superior%20outcomes%20in%20all%20situations.

CHALLENGE: But, experts like Mike Kitces are divided on whether the 4% withdrawal rate is the best option. Many, including the creator of the rule, say that 5% is a better rule for all but the worst-case scenario.

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RULES of 72, 78 and 115: https://medicalexecutivepost.com/2020/11/22/the-rules-of-72-78-and-115/

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PODCAST: https://www.bing.com/videos/search?q=4+percent+rule&&view=detail&mid=5B0C2D1CABA12C7CF6075B0C2D1CABA12C7CF607&&FORM=VRDGAR&ru=%2Fvideos%2Fsearch%3Fq%3D4%2Bpercent%2Brule%26FORM%3DHDRSC3

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