How to prepare for unexpected expenses

Unexpected expenses can feel like a plot twist in your financial story. A flat tire, a medical bill, a home repair you didn’t see coming — they all have the power to throw off your budget. But here’s the good news: with a bit of planning, those surprises don’t have to become setbacks.

You don’t need a crystal ball to be financially ready — just a plan that works for your family, your lifestyle, and your goals. Let’s break it down.

Greenlight, the #1 family finance and safety app, can help you start with the basics. With features like Savings Goals and up to 6%* in Savings Rewards, kids and teens can get a head start on building financial resilience. 

Why planning for unexpected expenses matters

According to a 2023 Federal Reserve report, nearly 1 in 3 adults would have difficulty covering a $400 emergency expense without borrowing or selling something. Whether it's a vet bill or a broken fridge, an unplanned expense can quickly become unmanageable.

The best defense? A proactive plan that cushions the blow. With small, steady steps, you can turn today’s worries into tomorrow’s wins.

#1 family finance and safety app

#1 family finance and safety app

Teach your kids and teens to earn, save, and invest with Greenlight.

Use code GLBLOG for one month, on us.*

Try Greenlight today

Step 1: Start an emergency fund

Think of your emergency fund as financial bubble wrap. It helps absorb the shock when surprise costs pop up. Experts suggest aiming for 3 to 6 months of living expenses, but don’t get stuck on the number — even just getting $500 is a great start.

Where to keep it:

• A high-yield savings account (easy to access but earns interest)

• A money market account (slightly less accessible, but typically higher yield)

Try to avoid using checking accounts for this fund. The temptation to dip in for non-emergencies can derail your plan.

Step 2: Build a buffer into your budget

Some expenses are just unplanned, like birthday party gifts or extra school supplies. That’s where a "miscellaneous" or "buffer" category comes in handy.

Tips to build your buffer:

• Add a line item in your monthly budget labeled “unexpected” or “miscellaneous”

• Allocate 5–10% of your monthly income to this category

• Carry any unused funds into next month

A buffer helps preserve your emergency fund for true emergencies. It's also a great way to track spending habits and identify recurring small costs you may want to plan for in the future. The goal is flexibility without sacrificing structure.

Step 3: Track past "surprises"

Not all surprises are truly unexpected; they are often just irregular. Think: annual car registration fees, quarterly insurance premiums, or back-to-school costs. These are expenses that don’t happen every month, but still show up regularly enough to be anticipated.

How to anticipate them:

• Review your past 12 months of expenses

• Highlight costs that felt unexpected

• Add them to your future budget in the correct month

Create a list of recurring non-monthly expenses and set calendar reminders a few weeks ahead. This way, you have time to adjust your spending before the cost hits. It can also help you avoid late fees and stress by planning early.

Step 4: Automate your planning

Set-it-and-forget-it doesn’t just apply to streaming services. Automating your savings and budgeting ensures consistency, especially when life gets busy.

Smart automation strategies:

• Auto-transfer a fixed amount each payday to your emergency fund

• Use apps or banking tools to round up purchases and stash the change

• Automate recurring bills so you don’t miss payments and face fees

Step 5: Involve your whole family

Financial planning shouldn’t fall on one person’s shoulders. Get the whole family involved. Let kids help spot ways to save, or ask teens to help track spending. It builds confidence and prepares them for real-world money management.

Assigning age-appropriate tasks and talking openly about household budgeting teaches kids how money works. These early lessons can help them avoid common financial pitfalls later in life, like underestimating expenses or neglecting savings.

Peace of mind is priceless

Unexpected expenses are part of life. But being caught off guard doesn’t have to be. With a mix of preparation, smart tools, and a family mindset, you can handle surprises with confidence.

Teach smart budgeting early. Set spending controls and savings goals, and teach kids how to manage money with Greenlight. Try Greenlight, one month, risk-free. †

This blog post is provided "as is" and should not be relied upon as a substitute for professional advice. Some content in this post may have been created using artificial intelligence; however, every blog post is reviewed by at least two human editors.

*Greenlight Core families can earn 2% per annum, Greenlight Max families can earn 3% per annum, Greenlight Infinity families can earn 5% per annum, and Greenlight Family Shield families can earn 6% per annum on an average daily savings balance of up to $5,000 per family. To qualify, the Primary Account must be in Good Standing and have a verified ACH funding account. See Greenlight Terms of Service for details. Subject to change at any time.