If there is more than 1 type of material or labour, in addition to their individual standards the individuals together also gives a new standard.
- Mix variance
Compares the std mix with the actual mix in order to identify whether the change is more expensive.
- Yield Variance
The actual mix is different to that of std mix, it might impact on the output produced.
Mix Variance Calculation
(Std Mix for Actual Total Impact – Actual Input) x Std. Price
Alternative,
Weighted Average Price = Total Weighted Std Cost
Total Weight
(Std Mix For Actual Total Input – Actual Input) x Difference between the std price weighted average price
Yield Variance Calculation
(Std Yield From Actual Total Output – Actual Yield) x Std Cost Per Unit Of Output.
NOTE – The Alternative can be used too.
- Material or Labour mix & yield variances both look into quantities and are considered as sub variances of the quantity variance.
E.g. 1. Material Mix + Material Yield = Material Usage Variance.
2. Labour Mix + Labour Yield = Labour Efficiency Variance.
Sales Volume Variance.
1. When the normal mix variance is customized based on sales.
(Std Mix For The Total Actual Sales – Act. Output) x Std Profit.
2. When the normal yield variance is customized based on sales.
(Bud. Sales – Act. Sales) x Std Weighted Avg. Profit
- If the Materials input are fundamentally different to each other (one is KGs, The other one is in LTRs & in METERs) under such conditions mix as well as yield variances are traditionally not calculated.
Planning & operational variances
- Operational Variance – Variances which arises through factors within the control of the management.
- Planning Variance – Variances which arises through external factors.
Planning Variance compares the Original Std & Revised Std.
Operational Variance comparesthe Revised Std with the Actual.
Interpretation & Investigation of Variances
Reasons for variances
(1) Specific Reason for the orgs.
(2) General Reasons;
- Problems with Standards Set.
- Efficient / Inefficient Operations.
- Efficient / Inefficient Controls or Management.
- Errors in Recording Actual Results.
- Macro & Micro Factors.
- Interrelationship of Variances.
Percentage Variance charts
Variances are normally calculated in absolute terms but if it is calculated in relative or % terms then the following are the advantages.
- Better understanding.
- Cannot be easily manipulated.
- Identify the trends in variances.
Investigations of Variances
It's important to identify the exact reasons as to why there is an adverse or favourable situation. For which an Org: needs to carry out an investigation. There would be a number of sales, materials, labour and O/Hs. It would not be possible to investigate everything hence the important variances should be identified. The following 3 criteria can be used;
(1) Size of the Variance
Large scale variances are normally seen as important.
(2) Controllability
Factors which cannot be controlled such as petrol prices would not be investigated.
(3) Cost Benefit Analysis
If the cost of investigating is more than the variance been looked at, then it does not make business sense.
The investigation models
1.Rules of Thumb,
Involves setting limits to identify whether to investigate or not, depends on the decision makers experience and the organization's situation.
2.Statistical Significance Model
A formalized method, where standards are identified as expected avg. (mean) & variances are identified as SD. Making it possible to visualize the relationship of standards & variances as a normal distribution
3.Statistical Control Charts
Statistical model info. Is shown in a chart to make it user friendly.
Interrelationship of Variances
In certain cases adverse or favourable of a particular variance might be because of adverse or favourableness of another variance
Standard Costing in the Modern Business Environment
Criticisms & Solutions
(1) Stable Vs Dynamic Environment.
- Standard Costing was developed in a stable business environment. So it was easy to develop Standards. But today the environment is ever changing, thus developing stds as well as achieving stds would be difficult.
- Solution – Develop stds for shorter time period.
(2) Cost Control or Cost Management.
- Traditionally it was about setting stds and achieving it. The modern idea is continuous improvement.
- Solution – Set difficult stds.
(3) Labour centric or Machine Centric.
- Traditionally most stds were developed based on labour hrs, but the modern environment uses more machines.
- Solution – Develop stds based on machine hrs.
(4) Standards & Behavioural Implications.
- Stds were implemented and when employees were considered as workers. Modern Environment employees are considered as human resources.
- Solution – Get the employees involved in the std setting process, Should not punish people but let them learn, encourage goal congruence etc.
Benchmarking
Benchmarking is identifying the best practice. Whereby it could lead to the improvement of performance.
- Internal Benchmarking
An entity (department, manager, employee, or SBU) is compared with another entity within the same group
- External Benchmarking
An entity compared with another entity which is outside the group.
McDonaldisation
McDonalds & Similar organisations implementation (low variety, High Volume) and its success of standard costing in their operations is identifiable at 4 levels,
- Calculability – Every meal identical and standardize
- Control – Reduced Human Involvement.
- Efficiency – Optimum Method of getting from one point to another.
- Predictability – Same service in every outlet throughout the world.
Diagnostic reference group (DRG)
- This is how the standards were developed and implemented within the healthcare industry.
- Where patients were grouped based on similar medical conditions from each group.
- A sample was taken and by studying the sample average treatment for each medical condition was established.
- That average treatment is now taken as the standard.