This post is written by Paramdeep.
Today, let us learn how to use NPV() function in Excel & create a simple financial model.
NPV – Introduction:
If you are dealing with cash and valuations, you are bound to have come across the NPV function. If you don’t know the assumptions behind the same, I bet it could cost you your job!
Let’s take a simple project – You buy a MSFT stock for USD 100. You receive a dividend of USD 10 in the first year, USD 20 in the second year, USD 40 in the third year and then you sell it out for USD 140. If you could have alternatively put this money in bank at 10% interest rate, have you gained anything?
How do you model this in excel? In this tutorial we understand how you can use NPV to do this analysis and what kind of pitfalls you can land into!!
What is the NPV() function
Simply speaking, NPV function calculates present value of your cash flows. Let’s take a simple example first –
You invest $100 in a bank, which pays 10% interest
- What is its value 1 year down the line?
- I am sure, you don’t need any coffee to get that value – 100 x 10% is the interest and 100 is the principal that you had. So the value 100 x (1+10%) = 110
- What about 2 years?
- Simple 100 x (1 + 10%)^2 = 121
- So, if I were to ask you, the present value of a cash flow of 121, that you were to get 2 years down the line at 10% interest?
- Again simple, you told me initially, it was $100
NPV does exactly that – gets you the present value of your cash flows
The function is simple, it does all the difficult calculations for you and gets you the solution!
Beware – The function has its own assumptions!
Though the function is quite convenient, but it has its own pitfalls. And in my modelling experience I have seen a lot of people making that mistake! Lets model the situation described in the beginning (The MSFT Case). The cash flows are given to you as:
Let us see, internally what we get by modelling the NPV from the first principles and using the NPV function
You can clearly see that there are two ways of using NPV function (and each has its own assumption!)
So what is happening internally?
Usually when we start a project, we assume that the investment is made upfront (On day 0). Then the revenues, costs and the cash would start flowing in. Since the investment is made on day 0, it should not be discounted.
But when you use the NPV function, excel internally makes an assumption that even the first cash flow is at the end of the year (Per se, this is not wrong, but in normal circumstances, you make the payment upfront!).
So the right usage of the function would be to add the first cash without discounting and then use the NPV function to discount the rest of the cash flows.
If you just use the NPV function on all the cash flows, then the inherent assumption is that even the first cash flow is at the end of the year.
Few other ways of calculating NPV
When you are dealing with cash flows and valuations (typically that is when you come across the functions like NPV, etc) even small mistakes cost dear. You want to make sure that you are as accurate as you can ever be. At that point of time, if the cash is not flowing at the year ends, you can use a more powerful function in excel – XNPV. You can show it the cash and the exact dates and it would calculate the exact NPV for you. People don’t often use it as they don’t know the exact dates of cash flow!
How do you calculate the discounted cash values in your models?
I know the easiest way would be to use the NPV function. It is easy to use but at the same time could be tricky. So how do you implement such functionality in your models?
Templates to download
I have created a template for you, where the subheadings are given and you have use the functions to get the right values for you! You can download the same from here. You can go through the case and fill in the yellow boxes. I also recommend that you try to create this structure on your own (so that you get a hang of what information is to be recorded).
Also you can download this filled template and check, if the information you recorded, matches mine or not!
For any queries regarding the cash impact or financial modeling, feel free to put the comments in the blog or write an email to paramdeep@edupristine.com
Join our Financial Modeling Classes
We are glad to inform that our new financial modeling & project finance modeling online class is ready for your consideration.
Please click here to learn more about the program & sign-up.
Learn more about Financial Modeling:
Go thru these articles to learn more about Excel Financial Modeling:
- Excel Financial Modeling – 6 part tutorial
- Introduction to Project Finance
- Using MOD() function to implement frequency escalation in Excel
- Creating a P&L Reporting Model in Excel – 6 part tutorial
The article is written by Paramdeep from Pristine.
Chandoo.org has partnered with Pristine to launch a Financial Modeling Course. For details click here.
35 Responses to “Skip weekends while autofilling dates in excel”
[...] Original post by Chandoo [...]
Hi,
Is there any way that I will choose which are my "working days"?
means, I want to leave also Friday as a free day and not only Saturday.
Or, maybe someday I will pick Tuesday as a day off.
I need to also peek Wednessday, Thursday and Friday as days off. Also, for Tuesday, I would need to leave it off once every two weeks. Is there a way to easy achieve this, so that I won't actually add to my workload?
Hi Mihai... you can use pattern fill feature to do this. Simply follow steps in below demo.
Hi,
I am using MS Office 2007 and for some reason, it does not show me these options. It just shows me 3 options:
Copy Cell (Not sure about the exact text)
Copy with Formatting
Copy without Formatting
Any idea how to get those options up?
Regards,
Deep
@Deep : I am not so well versed with 2007, but here is how you can do this using menus:
enter first date of the series
select the range you want to fill
go to menu > edit > fill > series
in the dialog, select date as the series type and "weekdays only" option
press ok...
Let me know if this doesnt work...
Now that was FAST!!!
I tried it but unfortunately it didn't work..
Here is the screenshot:
http://img291.imageshack.us/img291/6573/excelsheetyr2.gif
This is what I tried..
I put the date in one row, in another row, added some calculations (as you can see in the image) and drag the content in other rows..
I could not find any Edit menu so i just clicked on the icon as you have shown in the 2nd image..
I hope I did the right thing...
Hmm...
there should be an edit menu as far as I know. Let me check that...
meanwhile... if it works you can use formulas to fill the series.
1. just enter the first date
2. in the 2nd row, enter a formula like =if(weekday(firstdatecell,2)=6,firstdatecell+2, firstdatecell+1)
3. copy the formula over the rest of the range...
@Deep:
you have to use the autofill handle, the small box at the lower right of the active cell. Right click on the autofill handle and drag down to the cells you want to autofill. A menu pops up showing the weekdays only option and others.
@Chandoo - Thanks but it did not work with my calculations. 🙁
@Robert - Yes, it worked this time but I guess, in my case it won't work as I want to add up the days from the column on the left. (As shown in the image)
Basically this is what I want:
1. I want to define project start date
2. There are no. of days assigned for each module
3. I want excel to calculate the date automatically. (By adding up the no. of days and deducting the weekends)
Any kind of help is appriciated.
Reagrds,
Deep
@Deep,
sorry, I misunderstood your question, I thought you would be searching for the autofill-function only (values).
If I got your request corrctly now, you could use the WORKDAY-function, returning the date before or after a specified number of workdays.
In Excel 2003 and earlier the Add-In Analysis Toolpak has to be installed, but since you are using 2007, it should work immediately.
@Deep.. as Robert suggested, Workday is what you should be using. It will calculate future date based number of working days you want to add to input date. Also, you can use this with your own list of holidays.
Thanks Robert, Chandoo.. I will try the things.. 🙂
I tried it and this time it worked.. Thanks to both of you.. you guys made my life much more easier 🙂
[...] You can also customize excel lists so that you can auto-fill, lets say bank holidays in your country or types of beer in your pub. One more auto fill trick. [...]
Hello,
I understand how to turn off the weekend values for a date fill in a regular auto fill. But, what if you are trying to create a custom one, that counts the amount of days in the formula bar, like 2 days, then 5 days, then 1 day etc etc etc, but they must be working days only and they must not include the weekends.
can that be done?
thanks!
hi..
i'm using excel 2007
I'm trying to insert current date automatically
then it suppose not to change after i save and open it on the next day.I need it to stay on the issued date.
i'm using Today function and it is not well work 4 me.
anybody can help to resolve my prob here?
please...
Hi guys,
How about if I just wanna fill up with weekend? The way I am doing now is using the function weekday and use filter to get weekend. Would appreciate if any one comes up with a better idea. Thank you very much.
Regards
Cheng
What happened to being able to indicate the series by adding a few cells and then using the autofill to copy? I can't get this to work - I need 4 rows with the same date skipping weekends.
2/6/2012
2/6/2012
2/6/2012
2/6/2012
2/7/2012
2/7/2012
2/7/2012
2/7/2012
2/8/2012
2/8/2012
2/8/2012
2/8/2012
2/9/2012
2/9/2012
2/9/2012
2/9/2012
Hi Kathy, sorry for a late comment. However, here's the solution.
1.) put your 1st desired date in the 1st 4 cells required (e.g. <cell A1:A4> 2/6/2012)
2.) put the following formula as is in the following four cell (i.e. A5:A8)
=IF(WEEKDAY(A1,2)=5,A1+3, A1+1)
=IF(WEEKDAY(A2,2)=5,A2+3, A1+1)
=IF(WEEKDAY(A2,2)=5,A2+3, A1+1)
=IF(WEEKDAY(A2,2)=5,A2+3, A1+1)
Note: "=5" denotes the number of working days in the week
"+3" denotes the number of days on weekends.
"+1" last denotes the number of days after the working date.
3.) Finally, select cells A4:A8 and then drag drown for furthur dates. The formula will skip Saturday & Sunday in the dates.
Let me know, if you want to tweak the formula as per other ways.
Kamlesh: Thanks for the formula. That was what I was looking for. It works the same in Google Docs Spreadsheets. At first I thought it didn't and did some unnecessary tweaking to make it work.
I was confused by the "IF(WEEKDAY(A2,2)" the modifier 2. I took it out and surpise, the formula didn't work right. I changed the 5 to 6 and then it worked. Turns out, (you probably know this) the default week starts with Sunday. Using 2 makes it start with Monday.
Any way, I didn't know about the Weekday function. Thanks for sharing this post.
Hi, Kamlesh, before i was using "workday" instead of "weekday" but it didn't work.
thanks for sharing the right formula.
At this moment I am going to do my breakfast, when having my breakfast
coming yet again to read further news.
Hi,
I'm using excel 2007
I'm trying to calculate a workday
4 nov 2014(a1) to 12 nov 2014(a2)
Normally i'm using Int formula to do this
=int(a2)-int(a1)
But, hey thats including weekend too... 😀
how do you calculate workday with this condition ?
and if there is not only those day, i mean in a month or two
Thanks before
sagari
@Sagari
=NETWORKDAYS.INTL(DATE(2014,11,4),DATE(2014,11,12),1)
=7
You can also include holidays into the formula by having a list of holidays in say A1:A10
Then use
=NETWORKDAYS.INTL(DATE(2014,11,4),DATE(2014,11,12),1,A1:A10)
Thanks for replying
Get #NAME? in return when using NETWORKDAYS.INTL
But get 7 with NETWORKDAYS
why ??
Hi
i had a query while making a template for one of my school daily task.
Most of the work in these template includes copy from webpage and paste in the template.
so the problem here is, whenevr me or my mates try to do ctrl+v
the format of the cell changes automatically.
I suggested them to use ctrl+alt+v (text) to paste
but they are not ok with it. they want me to make template in such a way that it should work with normal ctrl +v
Any ideas guys ?
Our working week is Tuesday to Saturday if I wish to make a sheet solely using those days is there a formula I can use ?
I need your support for date.
I wand to numbering actual working date based on date
below is expected result... so how can apply formula to get number automatically... please help me get resolve this problem... many thanks in advanced.
1 8/1/2018
2 8/2/2018
3 8/3/2018
8/4/2018
8/5/2018
4 8/6/2018
5 8/7/2018
6 8/8/2018
7 8/9/2018
8 8/10/2018
8/11/2018
8/12/2018
9 8/13/2018
10 8/14/2018
11 8/15/2018
12 8/16/2018
13 8/17/2018
8/18/2018
8/19/2018
14 8/20/2018
15 8/21/2018
16 8/22/2018
17 8/23/2018
18 8/24/2018
Dear Sir,
I want to make a series of December month which will show all the dates without Fridays.
Is it Possible sir??
Interesting question Salauddin... The built-in options in Excel can't generate dates like this. But you can use simple formulas to make up such a series.
In first cell (say A1) write the starting date (1-Dec-2019 for example). Makesure this date is not a Friday.
In the next cell (A2) write =WORKDAY.INTL(A1,1,16)
Now drag down the A2 cell to fill up dates. Stop when you reach the end of your range of dates.
If your Excel doesn't have WORKDAY.INTL(), then use the below alternative formula.
=A1+1+(WEEKDAY(A1)=5)
Thank you, Thank you very much sir. it worked perfectly & I was expecting something like that.
i want to make a template with date that skips fortnightly is it possible in excel
Hi Chandoo, I need to skip weekends from a specified list of dates.
from the below information I want to pick only the weekdays amount only along with lookup which has builder name separately.
Date Builder Units Amount
06-Jan-08 Doug 8 389
09-Feb-08 Dave 10 385
15-Mar-08 Dave 3 771
18-Apr-08 Brian 5 313
05-May-08 Larry 10 574
22-May-08 Rob 8 730
25-Jun-08 Morgan 4 471
15-Aug-08 Jones 1 548
12-Dec-08 Doug 3 323
10-Apr-09 Dave 5 712
14-May-09 Dave 9 432
10-Sep-09 Brian 6 460
31-Oct-09 Larry 3 741
18-Sep-08 Rob 8 580
25-Nov-08 Doug 6 685
29-Dec-08 Dave 2 401
24-Mar-09 Dave 10 342
04-Jul-09 Brian 8 475
21-Jul-09 Larry 3 535
07-Aug-09 Rob 3 663
26-Feb-08 Gill 10 762
22-Oct-08 Jones 5 425
08-Nov-08 Doug 1 639
27-Apr-09 Dave 4 409
27-Sep-09 Dave 4 612
01-Sep-08 Brian 6 688
17-Jun-09 Larry 10 663
24-Aug-09 Rob 5 608
23-Jan-08 Morgan 6 388
Thank you! I've been struggling with this for ages and today, thanks to this post, I finally figured that I had to customize my toolbar in order to utilise the "Fill" menu. This will make my monthly reports much, much neater