Two always know more than one. So we put our heads together, trying to figure out how these new WIP methods in Microsoft Dynamics NAV 5.0 actually work. This is what we found out…
Actually it is fairly simple. First of all you have to make the following decision: Do I recognize completed job tasks during the project? And if so, do I recognize the costs or the sales prices?
|
WIP –METHOD |
No |
Completed contract |
Yes – cost |
Cost Value or Cost of Sales |
Yes – price |
Sales Value or Percentage of Completion |
So the question that was bothering us, what is then the difference between Cost Value and Cost of Sales and between Sales Value or Percentage of Completion. Let's explain with the following example:
STEP 1: CREATE JOB
This is a job divided over several tasks, where each task contains one or more planning lines. The job is sold to the customer for a fixed price (the job planning lines of type schedule are not equal to those of type contract).
STEP 2: REGISTER JOB USAGE & INVOICE THE CUSTOMER
Through the job journal we register the hours performed by Davy on 01/01/08 (job task 1000) and on 02/01/08 (job task 1001). We also register the items used on 02/01/08 (job task 1001), but the cost of these items has increased since the planning to € 800,00 per item. On 31/01/08 we send the customer an invoice, but only for the performed hours of Davy. This results in the following job overview.
STEP 3: CALCULATE WIP
Try out the different WIP Methods on the Job card for the calculation of the WIP Amounts.
WIP Method |
Cost value |
Sales value |
Cost of sales |
Percentage of completion |
Completed contract |
Total WIP Sales Amount |
0,00 |
2.488,63 |
0,00 |
4.167,19 |
-1.328,00 |
Total WIP Cost Amount |
2.122,27 |
0,00 |
1.626,25 |
0,00 |
2.144,50 |
Recog. Sales Amount |
1.328,00 |
3.816,63 |
1.328,00 |
5.495,19 |
0,00 |
Recog. Costs Amount |
22,23 |
2.144,50 |
518,25 |
2.144,50 |
0,00 |
Cost Value vs Cost of Sales
Both WIP methods will recognize the revenue of the job at the moment of invoice to the customer. Both WIP methods will do this based on the costs related to the job. So in both cases we will get the same basic formula to calculate the WIP Cost Amount:
Total WIP Cost Amount = cost of consumption – cost of invoice
Notes:
- you can compare the cost of consumption with the batch-job 'Calculate Job WIP Value' in NAV 4.0 and the cost of invoice with the batch-job 'Calculate Job Recognition' in NAV 4.0
- cost of consumption and cost of invoice are no NAV-fields, but used to explain the calculation
However, the way in which these costs of consumption and costs of invoice are calculated are slightly different.
Cost Value
The cost of consumption is initially represented by Usage (Total Cost). However this cost is corrected to represent the part of the agreed sales price versus the planned sales price.
Cost of consumption = Usage (Total Cost) * ( Contract (Total Price) / Schedule (Total Price) )
The cost of the invoice should be interpreted as the planned cost of the job, the costs that you would normally make with all consumptions and is initially represented by Schedule (Total Cost). However this cost is corrected to represent the part of the invoiced sales price versus the sales price of planned consumption.
Cost of invoice = Schedule (Total Cost) * ( Contract (Invoiced Price) / Schedule (Total Price) )
→ Total WIP Cost Amount = [ Usage (Total Cost) * ( Contract (Total Price) / Schedule (Total Price) ) ] - [ Schedule (Total Cost) * ( Contract (Invoiced Price) / Schedule (Total Price) ) ]
Example:
Cost of consumption = (297,00 + 1.847,50) * ( (664 + 7.291,60 + 332,00) / (498,00 + 5.686,60 + 166,00) ) =2.798,595
Cost of invoice = (297,00 + 2.838,24 + 99,00) * ( (664,00 + 664,00) / (498,00 + 5.686,60 + 166,00) ) = 676,3252
Total WIP Cost Amount = 2.798,595 – 676,3252 = 2.122,27
Cost of sales
The cost of consumption is simply represented by Usage (Total Cost). The actual consumption is placed onto the balance accounts, without a correction.
Cost of consumption = Usage (Total Cost)
To recognize the invoiced job costs, we look at the initially planned costs, represented by Schedule (Total Cost). This is the same as for the WIP method Cost Value. However, a different correction of this cost is taken into the result. A percentage is calculated, based on the invoiced sales price versus the sales price of planned invoicing.
Cost of invoice = Schedule (Total Cost) * ( Contract (Invoiced Price) / Contract (Total Price) )
→ Total WIP Cost Amount = Usage (Total Cost) - [ Schedule (Total Cost) * ( Contract (Invoiced Price) / Contract (Total Price) ) ]
Example:
Cost of consumption = 297,00 + 1.847,50 = 2.144,50
Cost of invoice = (297,00 + 2.838,24 + 99,00) * ( (664,00 + 664,00) / (664,00 + 7.291,60 + 332,00) ) = 518,2527
Total WIP Cost Amount = 2.144,50 – 518,2527 = 1.626,25
Conclusion |
Use Cost of Sales in a time & material project. Use Cost Value in a fixed price project. |
If scheduled prices are equal to contracted and invoiced prices, then the Cost of Sales and the Cost Value will calculate the same Total WIP Cost Amounts. |
Sales Value vs Percentage of Completion
Both WIP methods will recognize the revenue of the job at the moment of invoice to the customer. Both WIP methods will do this based on the sales prices related to the job. So in both cases we will get the same basic formula to calculate the WIP Cost Amount:
Total WIP Sales Amount = expected sales price – price of invoice
Notes:
- you can compare the expected sales price with the batch-job 'Calculate Job WIP Value' in NAV 4.0 and the price of invoice with the batch-job 'Calculate Job Recognition' in NAV 4.0
- expected sales price and price of invoice are no NAV-fields, but used to explain the calculation
In both cases, the price of invoice is easy to retrieve, since it is represented by Contract (Invoiced Price). No corrections are necessary here.
Price of invoice = Contract (Invoiced Price)
However, the way in which the price of consumption is calculated is slightly different.
Sales Value
The expected sales price is initially represented by the Contract (Total Price). However, a correction is made based on the expected price of actual consumption versus the prices of planned consumption.
Expected sales price = Contract (Total Price) * ( (Usage (Total Price) / Schedule (Total Price) )
→ Total WIP Sales Amount = [ Contract (Total Price) * ( ( Usage (Total Price) / Schedule (Total Price) ) ] – Contract (Invoiced Price)
Example:
Expected sales price = (664,00 + 7.291,60 + 332,00) * ( (498,00 + 2.426,60) / (498,00 + 5.686,60 + 166,00) ) = 3.816,634
Price of invoice = 664,00 + 664,00 = 1.328,00
Total WIP Sales Amount = 3.816,634 – 1.328,00 = 2.488,63
Percentage of completion
The expected sales price is initially represented by the Contract (Total Price). This is the same as for the WIP method Sales Value. However a different correction of this price is taken into the result. The correction is based on the cost of actual consumption versus the cost of planned consumption.
Expected sales price = Contract (Total Price) * ( (Usage (Total Cost) / Schedule (Total Cost) )
→ Total WIP Sales Amount = [ Contract (Total Price) * ( Usage(Total Cost) / Schedule (Total Cost) ) ] – Contract (Invoiced Price)
Example:
Expected sales price = (664,00 + 7.291,60 + 332,00) * ( (297,00 + 1.847,50) / (297,00 + 2.838,24 + 99,00) ) = 5.495,188
Price of invoice = 664,00 + 664,00 = 1.328,00
Total WIP Sales Amount = 5.495,188 – 1.328,00 = 4.167,19
Conclusion |
Sales Value and Percentage of Completion calculate the same Total WIP Sales Amounts, unless the price or cost of the usage should change since the planning. |
If you want to take into account changes in sales prices, then use Sales Value. |
If you want to take into account changes in costs, then use Percentage of Completion. |
Completed Contract
This last method will not recognize the revenue of the job untill the job is completed. Both realized costs and realized sales prises are taken into balance as the job progresses.
→ Total WIP Sales Amount = Contract (Invoice Price)
→ Total WIP Cost Amount = Usage (Total Cost)
Example:
Total WIP Sales Amount = 664,00 + 664,00 = 1.328,00
Total WIP Cost Amount = 297,00 + 1.847,50 = 2.144,50
STEP 4: HOW THE WIP-TOTAL FIELD INFLUENCES YOUR WIP AMOUNTS !
Now let's take a look how the field 'WIP-Total' on the job task lines. So set the field on 'Total' for each job task line and recalculate the WIP amounts for each WIP method.
WIP Method |
Cost value |
Sales value |
Cost of sales |
Percentage of completion |
Completed contract |
Total WIP Sales Amount |
0,00 |
2.447,49 |
0,00 |
4.082,33 |
-1.328,00 |
Total WIP Cost Amount |
2.037,53 |
0,00 |
1.589,04 |
0,00 |
2.144,50 |
Recog. Sales Amount |
1.328,00 |
3.775,49 |
1.328,00 |
5.410,33 |
0,00 |
Recog. Costs Amount |
106,97 |
2.144,50 |
555,46 |
2.144,50 |
0,00 |
You will notice that the calculated amounts are slightly different, while the WIP methods and the used formulas are not different than in the previous step. However, the WIP methods are now applied per job task line instead of for the entire project.
Total WIP Cost Amount = ∑ Total WIP Cost Amount / job task line
Total WIP Sales Amount = ∑ Total WIP Sales Amount / job task line
Example - Cost Value
Job Task No. 1000 Total WIP Cost Amount = ( 297,00*(664,00/498,00) ) – ( 297,00*(664,00/498,00) ) = 0,00
Job Task No. 1001 Total WIP Cost Amount = ( 1.847,50*(7.291,60/5.686,60) ) – ( 2.838,24*(664,00/5.686,60) ) = 2.037,53
Job Task No. 1002 Total WIP Cost Amount = ( 0,00*(332,00/166,00) ) – ( 99,00*(0,00/166,00) ) = 0,00
Total WIP Cost Amount = 0,00 + 2.037,53 + 0,00 = 2.037,53
Conclusion |
You can combine or separate job task lines for WIP calculation by setting the WIP-Total to Total. |
You can exclude job task lines for WIP calculation by setting the WIP-Total to Closed. |
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