What standard costing is

Standard costing sets a planned cost for each input — material, labour, overhead — before production happens. When actual production occurs, the actual costs are compared against these standards, and the differences are analysed as variances. The goal isn’t to predict actual cost perfectly; it’s to flag what’s drifting and why, so management can act.

Used heavily in manufacturing, but the concept transfers to any operation with repeatable processes — restaurant chains, BPOs, even healthcare.

Setting the standards

Three approaches:

• Ideal standards — perfect performance, no waste, full efficiency. Demotivating in practice; rarely used as the day-to-day target.
• Attainable standards — what should be possible with reasonable effort and normal conditions. Most common.
• Currently attainable standards — rolled forward from past performance with some improvement target. Easy but loses ambition.

Standards typically cover three categories: material (price per unit, quantity per output), labour (rate per hour, hours per output), and overhead (variable and fixed components).

The six core variances

Material variances

• Material price variance = (Actual price − Standard price) × Actual quantity. Did we pay more or less per kg than planned?
• Material usage variance = (Actual quantity − Standard quantity for output) × Standard price. Did we use more or fewer kg than the recipe says?

Labour variances

• Labour rate variance = (Actual rate − Standard rate) × Actual hours. Did we pay more per hour than planned?
• Labour efficiency variance = (Actual hours − Standard hours for output) × Standard rate. Did the work take more or fewer hours than the standard?

Overhead variances

• Variable overhead spending variance — did variable overhead per unit of activity differ from plan?
• Fixed overhead volume variance — did we produce more or fewer units than the volume assumed in setting fixed overhead rates?

Worked example — material variance

Standard: each unit of product needs 2 kg of raw material at ₹50/kg. Budgeted output: 10,000 units. So standard cost = 20,000 kg × ₹50 = ₹10,00,000.

Actual: produced 10,000 units. Used 21,500 kg. Paid ₹48/kg. Actual cost = 21,500 × 48 = ₹10,32,000.

Total variance = 10,32,000 − 10,00,000 = ₹32,000 Adverse (paid more than standard).

Decompose:

• Price variance = (48 − 50) × 21,500 = ₹43,000 Favourable (we got a discount).
• Usage variance = (21,500 − 20,000) × 50 = ₹75,000 Adverse (used 1,500 kg more than recipe).

Total: 75,000 A − 43,000 F = ₹32,000 A. ✓

Management story: procurement saved money (good) but production wasted material (bad — investigate). Without decomposition, the headline “₹32,000 over budget” hides the underlying drivers.

How to investigate variances

• Material price adverse. Inflation? Supplier change? Emergency procurement at premium? Quality upgrade?
• Material usage adverse. Lower-quality materials? Inexperienced operators? Equipment defects? Specification changes?
• Labour rate adverse. Overtime hours? Wage increase? Hired senior workers for junior jobs?
• Labour efficiency adverse. New workers? Defective equipment? Materials caused rework? Process changes?
• Overhead variance. Utility tariff change? Maintenance backlog? Volume below break-even?

Variances are pointers, not verdicts. They tell you where to look, not what’s broken.

Strengths and limitations

Strengths:

• Highlights deviations from plan in real time.
• Supports management-by-exception — focus only on material variances.
• Forces a planning discipline.
• Provides a benchmark for performance reviews.

Limitations:

• Standards become outdated if not refreshed; obsolete standards mislead.
• Can encourage gaming — e.g., buying low-quality cheap material to favour price variance, then suffering usage variance.
• Less applicable in fast-changing or low-volume environments.
• Doesn’t capture non-financial performance (defect rates, lead times, customer satisfaction).

Lesson recap — and course recap

• Standard costing sets planned costs, compares against actuals, analyses variances.
• Total variance splits into price/rate (per-unit) and usage/efficiency (quantity).
• Six core variances: material price/usage, labour rate/efficiency, overhead spending/volume.
• Variances point to where to investigate — not what’s wrong.
• Refresh standards regularly to keep the system useful.

You’ve now reached the end of all 33 lessons — the full accounting curriculum a beginner needs to read financial statements, manage a small business’s books, and understand the cost drivers behind any operation. Next steps: practise with real transactions, explore software (Tally, QuickBooks, Xero, Zoho Books), and pick a deeper specialism — auditing, tax, financial reporting under IFRS, or managerial accounting.