How Small Monthly Withdrawals Slow Down Compounding

Any investor, new or seasoned, knows about compounding. You invest the money and get progressive returns over time with a fixed interest rate. That’s how it usually works. But what if you don’t feel like risking it and make small monthly withdrawals? That’s what we’re going to discuss in this article. 

Compounding Needs Time and Capital

Warren Buffett famously said, “The stock market is a device for transferring money from the impatient to the patient”. This general principle perfectly encapsulates the essence of compounding. When you invest and patiently wait, the portfolio grows over time. 

For example, a $10,000 portfolio earning an average return of 7% grows to $10,700 after one year. In the second, that return is earned on the $10,700, turning into roughly $11,450. In other words, the more you wait, the bigger the reward.

Compounding rewards the patient, as the initial investment base continues to grow uninterrupted. But what if you decide to withdraw? 

The Arithmetic Drag of Withdrawing

Using the same example, let’s say you’re withdrawing $400 each month. It doesn’t seem that major and will be overshadowed by your usual expenses. The impact, however, is felt when you withdraw consistently. 

Over one year, your $10,000 with reduce down to $4,800. You remove the bulk of your capital, leaving no room for your 7% interest to compound. You only stand to gain $336 next year, and the result is that those missed gains compound, making your portfolio unprofitable. 

If you take this approach, you’re constantly generating lost gains. Over multiple years, they will become more pronounced, especially if you don’t pay attention to the market. 

Sequence of Returns Risk

Return only tells part of the story. Two investors can both earn an average of 7% over a decade, yet end up with completely different outcomes. The difference comes down to the sequence-of-returns risk.

The market can shrink, and when withdrawals coincide with downturns, the impact can be severe. If a portfolio declines by 20% and your withdrawals continue as planned, the initial $10,000 will be reduced to $8,000. Your balance will drop sharply, and you won’t be able to make up the difference during a rebound. 

That’s precisely why a sequence of returns does not change the average return. It only ever changes the outcome, and it’s crucial ot understand this concept. 

The Big Picture

If we consider things holistically, the idea is simple: compounding requires time and capital. If either is interrupted, long-term growth slows to a screeching halt. Small, recurring withdrawals shrink your gains. Stretched over time, the impact can become substantial, even if markets deliver steady average returns.

This doesn’t mean withdrawals shouldn’t occur. During emergencies, accessing the funds can be a godsend. The issue is the withdrawal rate relative to expected returns. When withdrawals exceed the portfolio's reasonable earnings, the gap gradually erodes long-term performance.

The key takeaway is that compounding is powerful but sensitive. Even modest, recurring withdrawals can create a measurable drag on performance. But how can you overcome it if you need the money now? 

Considering Short-Term Financial Options

Even with existing investments, covering unexpected expenses can prove challenging. The returns don’t always pay for emergencies, and using short-term options can help preserve invested capital. 

If you proceed with borrowing, you typically choose between: 

• Emergency savings funds
• Short-term personal loans
• Lines of credit
• Credit cards used strategically and repaid quickly

Most have a skewed view of short-term loans, with some drastically opposed to taking on any. Gregory Allen, the CEO of ASAP Finance, challenged this view: “Based on my experience, in certain situations, financing can be more efficient than selling investments during market swings.” 

Gregory and his company work with clients to evaluate the cost of borrowing and compare it with the potential long-term impact of withdrawing investments. ASAP Finance helps clients make informed liquidity decisions, not reactive ones. 

The 2025 economic well-being report suggests 37% of US adults struggle to cover a $400 emergency expense with cash or savings. As such, borrowing remains a legitimate option for any investor. Ignoring it simply means you’re reducing the number of available options. 

Closing Thoughts

In the end, the math behind compounding is straightforward, even if its effects are not always obvious in the short term. Every dollar left invested continues working, generating returns that build on previous gains. Every dollar withdrawn does the opposite, hindering progress.  

This doesn’t mean you should avoid accessing your money when it’s genuinely needed. Instead, you need to approach the withdrawal carefully. If you fully understand the long-term implications, then you can come up with alternatives and plan ahead.

For any investor, the goal largely remains the same: preserve capital long enough for interest to compound. If you need immediate financial relief, it’s more than okay to turn to short-term options. Be careful with how you treat your investments, and it will pay off in the long term.

Website source: ASAP Finance
Contact person: Gregory Allen