July 2026 Financial Planning Update:
Mental Accounting – Why Your Brain Creates Buckets Your Balance Sheet Doesn’t

A couple owns a landscaping business. They have $30,000 sitting in savings earning 3% while paying 5.9% on a $28,000 van loan.

They ask a simple question:

“Should we just pay off the van?”

At first glance, it can feel like there should be one correct answer.

One of the things I’ve enjoyed most while studying financial planning is discovering that’s rarely how financial decisions actually work. The numbers matter, but they do not tell the whole story. What fascinates me most is that the psychology influencing our decisions can be almost invisible to us. We tend to believe we’re making purely rational choices, when in reality, we’re also optimizing for things like certainty, flexibility, control, simplicity, or peace of mind in the same way we make most non-financial decisions.

Paying off the loan may very well be the right decision for them. It’s certainly not the only option to consider.

What fascinates me is how quickly our minds decide the answer is obvious. Before we’ve considered the rest of their financial picture, we’ve already reached a conclusion – and we’re convinced that conclusion came from logic alone.

Behavioral economists have spent decades studying these hidden influences. One of them is called mental accounting.

Mental accounting is our tendency to organize money into separate mental buckets: the emergency fund, the investment account, the vacation savings, the car loan. Those buckets help us stay organized, but they can also shape how we evaluate financial decisions.

Our landscaping couple naturally sees two separate conversations: the van loan and the savings account. In reality, they’re just two variables of the couple’s full financial picture.

One planner might recommend paying off the loan. It’s a guaranteed return equal to the interest they’ll no longer pay, eliminates a monthly obligation, and provides something a spreadsheet can’t measure – peace of mind.

Another planner could reasonably recommend keeping the loan, maintaining liquidity, or investing excess cash if it better supports the couple’s long-term goals and overall financial plan.

Neither recommendation is irrational.

They’re simply optimizing for different definitions of success.

One prioritizes certainty. The other prioritizes flexibility or long-term wealth creation. The numbers haven’t changed. The objective has.

Numbers are objective. Financial decisions rarely are. The math helps define what’s possible, but it doesn’t determine what’s best. That depends on what you’re optimizing for – whether it’s certainty, flexibility, growth, or peace of mind.

The real question isn’t always, “Should I pay off this loan?”

It could be “What is the highest and best use of my next dollar, given everything else happening in my financial life?”

Sometimes the answer is eliminating debt. Sometimes it’s investing. Sometimes it’s maintaining liquidity because flexibility has value.

The goal isn’t to optimize one account or eliminate one liability. It’s to strengthen your overall financial position while making decisions that align with your goals, priorities, and comfort with risk.

The next time you’re faced with a financial decision, try one small mental shift.

Instead of asking, “Which bucket should this money come from?”

Ask “If every dollar I own were sitting on the table today, where could it do the most good?”

That simple change in perspective won’t always change your answer.

But it can change how you arrive at it.

You may already be familiar with this idea. If so, I hope it simply gives you a new way to think about discussing financial decisions with someone a generation or two behind you. Sometimes understanding why we make a decision is just as valuable as knowing what decision to make.

Until next month – Cheers!