Today we will build a mortgage payment calculator using excel. But we will not build a boring excel sheet, we will build a mortgage calculator that is easy to play with.
A mortgage payment is a monthly installment that you pay towards a loan. Any mortgage loan will typically have,
- loan amount
- duration of the loan (also called as tenure of mortgage) in years
- interest rate (APR) per year
Given these 3 parameters, we can easily determine the monthly installment amount (this will be the same amount for all months during loan tenure)
We are going to use Excel’s form controls (more on this below) to build a mortgage payment calculator like this:
Why you should not be boring and use the form controls
A form control is a button or check box or scrollbar or some other click-able thing you see in Windows. Do you know that you can add the very same controls to Excel spreadsheet to make the it interactive?
For example,
- instead of asking a user to enter “yes” or “no” in a cell, you can ask them to click a check box.
- instead of taking “age” in a cell, you can use a scroll bar and set the values from 0 to 100.
This way of gathering inputs is more fun, engaging and interactive.
Now that you find form controls hot and attractive, lets proceed and make a house loan payment calculator.
How is mortgage payment calculated?
As I said above, any mortgage (or housing loan) will have 3 parts – loan amount (p), loan tenure (n) and annual interest rate (r).
Given the values of P, N and R, we can find the monthly payments using Excel’s PMT formula like this:
=PMT(R/12,N*12,P)
[Related: PMT formula syntax & examples]
[Related: Amortization Schedule in Excel]
We are dividing interest rate (R) by 12 since R is annual interest rate and we make monthly payments.
We are multiplying loan duration (N) with 12 since we are going to make monthly payments.
Making the mortgage calculator in Excel
We will use scroll-bar controls to take numeric inputs required (P,N and R) for the payment calculation. And we feed these values to PMT formula to find the monthly installment amount.
Step 1: Add a Scroll-bar Control
We will use this scroll bar to take “loan amount” input. To keep it simple, we will ask users to enter input in ‘000s. So, if the loan is $120,000, the input should be 120.
First add a scroll-bar form control to your excel sheet. To do this go to Developer Ribbon > Insert > Scroll-bar Form Control in Excel (related: enable developer toolbar in Excel)
Add a Scroll-bar Control
Once selected, just add the control to spreadsheet by clicking anywhere.
Step 2: Set Properties for this Scroll-bar
To set the properties for the scrollbar control, right click on it and go to “format control” option. Now go to “Control” tab.
Here set minimum and maximum values for the scroll bar. To keep our model simple, just set minimum as 35 and maximum has 500.
Also, select a cell to link the scrollbar. When you do this, excel links the scroll bar to the selected cell. So whenever scroll bar is updated the cell gets updated too (and vice-a-versa). See this illustration:
Step 3: Add Remaining Scroll bars
Repeat the same steps for 2 other scroll bars. One for interest rate and one for loan tenure.
Make sure you set the minimum and maximum values in a reasonable range.
Step 4: Plug the values in to PMT formula
Now that the scroll bars are ready, just write the PMT formula. Assuming you have linked scroll bars like this:
- Loan amount in cell A1
- Interest rate in cell A2
- Loan tenure (years) in cell A3
The formula will be,
=PMT((A2/12)%,A3*12,A1)
Remember, PMT returns value in negative numbers (as it is the amount we need to pay, not get). But you can make it positive (for display purposes) by multiplying it with -1 like this = -PMT((A2/12)%,A3*12,A1)
Step 5: Play with your Model
Now your mortgage payment calculator is ready. You can play with it by testing various combinations and finding monthly payments. You can easily see what happens when you increase loan tenure or decrease interest rate.
Download Excel Mortgage Payment Calculator
Here is the excel mortgage payment calculator file. Download and play with it.
Bonus – Making an Amortization Schedule
You can easily extend this model to add an amortization schedule to see how much of each monthly payment is towards principal and how much is for interest.
- You can calculate principal portion for any month using PPMT formula like this
=PPMT(R/12,M,N*12,P). Here “M” is the month for which you want principal amount. - You can calculate interest portion for any month using IPMT formula like this
=IPMT(R/12,M,N*12,P).
Full tutorial: Loan Amortization Schedule with Excel.
Do you love form controls?
Do you use form controls in your spreadsheets? I find them pretty intuitive and use them wherever I can. I have made many complex spreadsheet models easy to understand and work with by just adding form controls. The beauty is that, they require no programming or anything. You just add them and link them to a cell.
What about you? Do you love form controls? Where do you use them most?
Learn More about Excel Form Controls:
66 Responses to “Budget vs. Actual Charts – 14 Charting Ideas You can Use”
[...] Update: Check out the results at Budget vs. Actual Charts [...]
Hi there:
I'm interested in understanding exactly how contestants #'s 1, 8 got their surplus or shortfall to show up at the top of the bar (is this overlapped or stacked somehow) and change colour? I hope this makes sense. I've tried to find samples and I can see contestant 8 (cuboo) may have used something called graphomate but I can't use this.
I need to create a bar chart that shows budget, and actual variance whether it be a surplus or a shortfall and I would like make it look like option 1 or 8 above but haven't a clear idea how to do it...any help would be greatly appreciated!
Regards..Linwe
[...] heute können alle Beiträge auf “Pointy Haired Dilbert” gesichtet und bis zum 12.04. bewertet werden. Falls mein Vorschlag - Nr. 8 - gefällt, freue ich [...]
Danken Sie Excel friend!
#6 is the best here. Simple, no extraneous visual effects.
I was all set to vote for #9...until I noticed its lack of y-axis labels. So I have to go with #6 also.
I think #6,#9 is enough .
#9 is my favorite
Nice data/ink ratio 😉
I agree with Jon - #6 for me.
8 & 14
I go for # 9 (simple) and #14 (complete)
I go for cuboo #8
cheers
#6 for overview at a glance / top management
#8 for deeper analysis / those who need more detailed information
#14 although I think you only need the bottom panel and I then would stack the Center charts vertically to make Center comparisons easier.
#10 gets my vote.
If there is a second place, then #14
denise
Hi, if I was not wrong, Samples 3,4 and 5 were created using Tableau software and not Excel. For more information on Tableau you might want to visit http://www.tableausoftware.com/. It was initially designed by Prof. Pat Hanrahan and his PhD students. I am not their salesperson but I thought someone might want to know more about this particular technology.
Hi Tin Seong Kam:
Thanks - I have looked at Tableau before. I have also found the means to reproduce something similar to chart 8 without using graphomate, and also chart 7. I proposed chart 9 as well but the overlap is confusing to some.
I am really not too concerned about showing actual budget figures but the variance in $ and % is important for my particular use. That is why I gravitate to the charts that seem to easily tell us that we have a surplus or a shortfall.
Thanks!
Linwe
11, 6, 9 (presque pareil)
7 pour la clarté
cuboo #8 ist my favorite
best regards...
8
8 is fantastic
I prefer N#8 - N# 1,7 & 8 use the settings of Rolf Hichert...
6 : The GURU (read "Jon Peltier ") has spoken,
SOO easy on eyes!
Hi Chandoo,
I liked Cuboo's submission. So #8 gets my vote.
Regards,
Sumit
Number 8 by far. Even though it's not part of the data display, the comments feature sells me. Variance explanations are as important as the actual variances.
I visually prefer #8, but #3 is really easier to understand, even if it lacks a lot of information (inverting budget/actual), legend, etc...
[...] All in all there are several great entries suggesting a good variety to present budget vs. actual performance. Go check them out. [...]
[...] reshape, zoo by learnr A reader of a Pointy Haired Dilbert blog enquired about best ways to visualise budget vs. actual performance. In response PHD challenged his blog readers to contribute their visualisations made using Excel or [...]
anyone willing to post their xls for these? Some really excellent exmaples.
To avoid the summary execution of the person presenting these to an executive team these charts must handle overspending as well as underspending, be comprehensible in 5 seconds and show the key fact clearly. The key fact isn't budget or actual - it's the magnitude of the gap!
Therefore:
#14 for nailing the key fact and being able to handle overspending. The winner therefore.
#6 for nailing speed-reading and being able to handle overspending, but somewhat obscuring the key fact. Second place.
#8 for nailing information depth and aesthetics. Third place.
I really wanted #8 to win, but that's the technician's view not the end-user's.
[...] Todas as contribuições podem ser vistas no seguinte endereço: Budget vs. Actual Charts – 14 Options You can Use Posted on April 5th, 2009 http://chandoo.org/wp/2009/04/05/budget-vs-actual-charts/ [...]
Social comments and analytics for this post...
This post was mentioned on Twitter by NancyJHess: I like to explore fav tweets of those I follow. Here is one from DutchDriver http://twurl.nl/17eiap Creative visual charts: Budget vs Actual...
number 8
clean, full of info, qualitative as well as quantitative
Hi,
I Like 4 chart in above as per the following ratings:-
no 1# -> 14***
no 2# -> 7***
no 3 # -> 8**
no 4# -> 1.3**
I will be greateful if someone can send me the process of making all above 4 charts.
Virender
[...] Budget vs. Actual Values in Charts – 14 more options [...]
[...] Budget vs. Actual – 14 charting options [...]
Does anyone know what type of chart #6 is (chart name?)? Also, how do I create this is Excel 2007?
@Shazbot
I'd call it a Column and Bar chart, but don't get hungup on names
To make it try this:
Setup the chart as a Clustered Column Chart
Change the Series so there is 100% overlap, ie: One column is in front of the other
Change the Budget series to a line chart
Set the line color to none
Set the marker style to a Flat Line
Change the marker width to make it the same width as the bar
Change colors and other chart properties to suit
Does anyone have an idea on how to create chart #1?
Thanks
Caroline, please see the german page: http://www.hichert.com/de/software/exceldiagramme/55
there you can find the original example for nr1.
best regards,
stefan
Caroline
This is a Clustered Stacked Column Chart
Which has the column under the Shortfall/Excess colored the same as the Budget
Have a look here
http://chandoo.org/forums/topic/question-about-budget-v-actual
&
http://peltiertech.com/WordPress/clustered-stacked-column-charts/
Hi,
Is it possible to get the source files like the other visualisation challenge (on sales).
Thanks,
Vijay
Dear Chandoo,
I discovered your site by pure chance and I am really thrilled about it and I am learning a lot.
Is it possible to post the source file for this visualisation challenge?
Thanks,
Vijay
[...] Budget vs. Actual Charts in Excel [...]
Dear Chandoo,
How do I create Chart #10 (comparing Budget vs Actual Performaces) by cost center by quarter without the cumulative performance. Do you have an actual example that I could use?
Thanks,
Greg
HI
Does anyone can help me to a to create chart #7? I'm beginer in excel , I started to work two weeks ago and my boss ask me to follow the budget/actual until the end of the year.
SO I really need your help.
Thanks in advance
p.s Sorry for my english ( i'm french)
@OKI, Greg
I have made a mockup of #7 and #10
It is available at:
http://chandoo.org/wp/wp-content/uploads/2009/04/Bud-Act-visualizaion-challenge-7+10..xlsx
#10 is a straight, Pivot Chart/Table but the data has been rearranged to get it into the pivot table
#7 is 2 charts, being a simple Bar Chart and a Scatter Chart with 100% Error Bars
I have used Named Formulas for the two charts.
HELLO Hui
Thanks you very much for your hepl , i really appreciate
Have I nice week
Hi,
I was wondering how can you replicated chart 1.3? The bars looked like there overlapped on two different axis?
Tony
I think 1 & 3 are good.
Hi Chandoo,
Please can you provide a link of the excel sheet for 1. Chart "3 colors and everything is clear"
I would like to drill into the spreadsheet and learn the secrets as how the chart was made.
Many thanks,
Sawan
@Sawan
It is probably 12 seperate charts, I will assume snapped to the underlying cells to ensure they are the same size
The left 3 Charts have a vertical Axis
The bottom 4 Charts have a horizontal Axis
The remainder have no axis
The remaining text maynot be part of the charts but is probably cell content
Saludos,
Como puedo descargar estos maravillosos ejemplos para estudiarlos y analizarlos deseo aprender a realizar este tipo de graficas en Excel.
Gracias,
Dear Chandoo and Hui,
Please would you help me (step by step if possible) to create Chart #8?
Many thanks in advance!
Dear Chandoo,
I think chart #8 is really great. Would really appreciate if you can show basic step to create it.
Thanks 🙂
Hi all,
Is there any step by step tutorial to recreate the the chart #1 please?
Would really appreciate if someone could show me how it done.
Regards
Sawan
Can someone tell me how do you create chart number 2? Thanks!
Am I the only one that can not display any of the images? Would love to take a look at these. This is the ONLY page on the whole website I have had this issue with. 🙁
Dear All,
how can i create chart # 7? is there any link where i can subscribe to your website by paying a certain amount. i want to learn some good excel techniques.
please let me know.
Cant see the images 🙁
Where can I find the link to download some of the above charts?? these are extremely usefull chart and would like to utilize the same.
Waiting for the reply.
Thanks..
I am interested for # 1,6,7,8,9,10,11 its very exciting for me .
Hi,
Just wanted to check, is there any possibility that pivot table or drop down work in power point?
Regards
Satyapal
@Satyapal... you can only use static images or slide animations in Power Point. Not features like pivot tables or drop downs. However, you can embed the entire workbook (or sheet) in a presentation. When clicked this will just open Excel so your users can play with the data.
Is there any instalment kind of facility available for joining the online course of Rs.12000/-.
Regards
Ramesh N
Hi,
I badly want to replicate #10. Can someone help me.. I've checked google to help but I can't figure out how to add the total 🙁
Regards,
Tim