An extra $50 a month saves you $1,800 in interest. That’s a 300% return.
Let me show you how.
I was on a flight once, sitting next to a guy who sold insurance. We got to talking about money. He mentioned he had a car loan – $25,000 at 7% for 60 months. His payment was $495. I asked if he paid extra. He said “why would I? The payment is the payment.”
I pulled out my phone and showed him the numbers. $50 extra a month – payment $545 – would save him $1,600 in interest and pay off the loan nine months early. He stared at the screen. “That’s it? That’s all it takes?” That’s all it takes.
He started paying $545 the next month. He texted me a year later: “Loan’s almost done. Thanks for the math.”
So let’s run the simulators together. I’ll use real numbers. You can plug in your own later.
First, the extra payment analyzer.
Take a $10,000 credit card at 18%. Minimum payment $200. If you pay only the minimum, it takes about 32 years to pay off. Total interest $22,000. That’s insane.
Now add $50 a month – pay $250. Payoff time drops to 5 years. Total interest $4,500. You save $17,500 and 27 years. For $50 a month. That’s the power of extra payments on high-interest debt.
Now take a $20,000 car loan at 6% for 60 months. Base payment $387. Total interest $3,200.
Add $50 – pay $437. Payoff time drops to 50 months. Total interest $2,600. Save $600 and 10 months.
Add $100 – pay $487. Payoff time drops to 44 months. Total interest $1,900. Save $1,300 and 16 months.
Add $200 – pay $587. Payoff time drops to 37 months. Total interest $1,100. Save $2,100 and 23 months.
See the pattern? The bigger the extra payment, the more you save. But even $50 matters.
Someone I worked with – let’s call him Tom – had a $30,000 student loan at 5% for 10 years. Payment $318. He was fine with that. But he had an extra $75 a month from a side gig. I showed him the numbers. $75 extra – payment $393 – would save him $2,400 in interest and pay off the loan two years early. He said “that’s a free vacation every year for two years.” He started the extra payments.
Now, what if you have multiple debts? That’s where the debt payoff calculator comes in.
Say you have three debts:
Card A: $5,000 at 22%
Card B: $8,000 at 18%
Car loan: $15,000 at 7%
You have an extra $100 a month. Where should it go? The calculator will show you. Put it on Card A first (avalanche), then Card B, then the car loan. That order saves the most money. But if you need motivation, put it on the smallest balance first (snowball). Either way, the extra $100 matters.
I remember a woman named Teresa. She had four debts. She was putting an extra $50 on each one – spreading it around. I told her to focus on one debt at a time. Put the whole $200 on the smallest balance. She did. She paid off that card in four months instead of two years. The feeling of victory pushed her to attack the next one.
So here’s a rule. Don’t sprinkle extra payments. Focus. Pick one debt. Put all your extra money there until it’s gone. Then move to the next.
Now, let’s talk about the loan amortization schedule. This is where you see the magic in slow motion.
Take that $20,000 car loan at 6% for 60 months. Open the amortization table. Look at month one: $387 payment, $100 interest, $287 principal. Now add $50 extra. Month one: $437 payment, still $100 interest, but $337 principal. That extra $50 went entirely to principal. You just skipped ahead three rows.
Do that every month, and you shave off months of payments at the end. That’s why extra payments feel small but add up big.
I had a client named Kevin. He had a $250,000 mortgage at 5.5% for 30 years. Payment $1,420. He started paying an extra $100 a month. He looked at the amortization table and saw that the $100 would save him $48,000 in interest and pay off the house seven years early. He said “that’s my daughter’s college tuition.” He kept the extra payments going for eight years. He’s still in the house, but the balance is way down.
Now, a word about where to find that extra $50. People say “I don’t have an extra $50.” Yes you do. You just spend it on things you don’t notice. A daily coffee is $5. That’s $150 a month. Two streaming services are $30. That’s $360 a year. One meal out is $25. Skip it once a week, that’s $100 a month.
I’m not saying never enjoy life. I’m saying look at your spending for one month. Find three things you can cut. Put that money toward debt. You won’t miss them after 30 days.
A friend of mine – not a client, just a guy – cut his cable, switched to a cheaper phone plan, and stopped buying lunch at work. Saved $120 a month. Put it toward his credit card. Paid off $8,000 in 18 months. He said “I don’t even miss the cable. I read more books now.”
So here’s your challenge. This week, find $50. Not $500. $50. Cut one thing. Then put that $50 toward your highest-interest debt. Do it automatically – set up a recurring transfer. Then forget about it. Come back in six months and see the difference.
The extra payment simulator shows you the future. You just have to take the first step.
P.S. The guy on the plane – the insurance salesman – he paid off his car loan 14 months early. He sent me a photo of the title. He wrote “$50. Who knew?”
James
