How to develop a personal finance forecast. Why do you need one? Completely understand your finances. Plan for the future and use it as a tool for financial decision-making.

How to Develop a Personal Finance Forecast

Welcome! Why I am posting personal finance on a food blog? I wrote this post before I decided to focus mainly on food blogging. I used to be a financial analyst and I’m also an excel geek at heart. I hope you find it useful.

Monthly budgets are really helpful. But I think we all need something more — a forward-looking financial forecast that is always changing as life changes.

Speaking of life-changing, creating a personal finance forecast is one of the important steps I took to prepare for my transition from a 9-5 job to working from home.

Before the big change, my husband and I needed to understand what expenses we’d be adding, which would be eliminated, and what we could cut back on.  And most importantly, we needed to look forward by more than one month.  So I created a personal finance forecast.  Similar to how I used to plan manufacturing costs as a finance analyst, but much more basic.

Why go through all the effort?

Gain a better understanding of your finances.  Use it as a tool for financial decision-making. Today I am sharing the tools and the process I use.  I hope you find it useful too!

Here are the tools needed.

I’ve created a template available for download in Excel.  Download here. Save

SaveIf you don’t have Microsoft Excel, I recommend getting it!  It’s an awesome tool.  No matter how hard I tried to get away from using Excel (as a finance analyst) by using other systems, I still used it in some form or fashion because of its functionality.  You can purchase a copy from or go directly to the Microsoft website – both should be the same price. also offers monthly subscriptions at a lower price.

If you are new to Microsoft Excel, I also recommend taking a beginner’s course to learn some of the basic skills.  Microsoft Excel 2016 for Beginners: Master the Essentials is a great course on  Or search for other Excel courses.  You can find some great FREE ones as well. This method is really meant to be done digitally.  I think it could be a real headache if you tried to do it with a hard copy.


Now that we have the tools let’s start with the how.  Here’s an overview:

  1. Document 3 to 4 months of history
  2. Forecast future months
  3. Track the current month (repeat)
  4. Adjust and maintain

1. Document 3 to 4 months of your cash flow history

Managing money is similar to weight management in the fact that you need to understand your cash earned and spent — like you need to understand the calories you consume and burn.  Keeping a journal is a great way to track and understand your finances.  Use the template available for download above to start documenting cash in and out.  Here are a few options for this step:

  • Start tracking today and track for 3-4 months.
  • Or go back 3-4 months and document.

Most bank and credit card company websites offer the ability to download transaction history by a certain date range.  Most should also categorize expenses for you.  If not, you may want to look into categorizing using an Excel pivot table; learn how here. Make sure to track everything by category for income, ongoing expenses, discretionary spending, and savings.  Customize the descriptions, due dates, and amounts in the template to fit your needs. Please note this example is fictional data.  It does not represent my personal (or anyone else’s) data. 


If you use a credit card, I’ve created a credit card section to track spending. (While the cash payment is tracked in the expense section.) Credit cards get a bad rap, but you can use them to your advantage by paying off the balance each month. AND earn rewards in the process, such as cashback, airline miles, hotel stays, and more.

My husband and I use credit cards for all payments unless cash is required.  It’s easy to categorize spending and pay one lump sum per month.

Please note this example is fictional data.  It does not represent my personal (or anyone else’s) data. 


Once you have completed 3-4 months, take a look at your data.  Is there anything that surprises you?  I was surprised at how much our family spent at restaurants.  We are focusing on eating at home more. (Blogging about food is also encouraging me to cook more!)  Are there places you can cut spending?  We’ve cut out cable and use on-demand subscriptions instead.

2. Forecast future months

Use the financial history you’ve collected, along with any information you have about future months, to forecast the remainder of the year.  (I’ve also provided the next year in a separate tab if you want to take it further.)  For example, we pay auto insurance every six months, so I incorporate that into our plan.  I also plan an increase in spending for holidays, birthdays, and special events throughout the year. Do this for income, expenses, savings, and credit card spending.

Here is where budgeting comes in.  Once you’ve documented your payment commitments each month, now use the future forecast area to set targets for discretionary spending. The really cool part about this tool is that it provides a longer-term picture of your finances. It’s a decision-making tool.  You can start allocating money for the trip you’ve been wanting to make or decide to put even more into retirement.

3. Track the current month

Next, begin to check off items throughout the current month.  I use color-coding to track automatic payments, scheduled payments via bill pay when payments are complete, and so on.  Here is the legend I use:


This is a great way to make sure you’re not forgetting a payment. Once the month is complete, review your bank account and other statements to reconcile the month’s data.  It’s completely up to you how detailed you want to get!

Each month, once you’ve reconciled how much you spent in each category, you can compare your target to actuals.  And then decide how to change your habits moving forward to meet your goals. Continue to track each month.

4. Adjust & maintain

As with any good plan, make adjustments as life changes.  The more you track and forecast, the easier it will be.  You’ll better understand trends – for example, the trend in utilities due to seasonal changes.  And find opportunities for improvement and savings.  Try different scenarios.

For example, what will happen if you increase your retirement savings? I hope this tool is as helpful to you as it has been for me.  I understand it takes time to create and maintain, and it may be a bit overwhelming at first.  But getting a good picture of your finances and making improvements is worth the effort!

Thanks for stopping by!  Please say hi in the comments and let me know if you found any of your data surprising. Will you be making any changes?

Read More

Check out these top personal finance books

  • Think and Grow Rich
  • The Millionaire Next Door
  • The Total Money Makeover

How to Develop a Personal Finance Forecast

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  1. Thanks for this sheet, it is much better than what I came up with.

  2. Hello
    thanks for your work please how can I get the pdf

  3. Eric Koehler says:

    I have used two Excel spreadsheets.

    One tracks EVERY monthly expense by month through the year. Each expense line also shows my projected annual cost for each item so I can track against projections. Also shows income (SS) or withdrawal from investments vs. projected month to month expenses. End of year I have a complete detailed record of expenditures against budget.

    Second spreadsheet is long term (15 years) with annual totals projected, adjusted through the year for asset values and remaining projected expenses in the current year. I use lower-than-average industry long-terms rates of return for safety.

    With these two spreadsheets (requires almost daily attention) I always know what we spend, how the markets are behaving, etc. Larger projected expenses are over-estimated again for safety – roof replacement, HVAC replacement, cars, vacations, etc.

    Combined with a conservative financial advisor we have always been on top of things for many years. Creates great awareness of finances and PEACE OF MIND.

  4. Hello,

    Great calculator! The layout is clean and simple making it easy to understand the information. I really like excel but I can never make spreadsheets look like this!

    1. Northern Yum says:

      Thanks, Pete! Glad you found it useful. 🙂

  5. Hi there would you mind sharing which blog platform you’re using?
    I’m looking to start my own blog in the near future but I’m having a difficult time making a decision between BlogEngine/Wordpress/B2evolution and Drupal.

    The reason I ask is because your design seems different
    then most blogs and I’m looking for something
    completely unique. P.S Apologies for being off-topic but I had
    to ask!

    1. Northern Yum says:

      Hi Will, I use WordPress (free when you purchase hosting from Bluehost) with a Bluchic theme called Rachel. Check out my blog resources page as well. I am really happy with it. 🙂

      Thanks for stopping! 🙂

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