Functional budgets explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
A budget turns a plan into numbers each manager can be held to. It starts with what you expect to sell and works backwards into what you must make, buy, pay and spend. This guide shows how the functional budgets link, and how they roll up into a master budget, for a small footwear unit.
A budget is a quantified plan for a period. Functional budgets (sales, production, material purchase, labour, overhead, expenses) are built in a chain, starting from the principal budget factor, usually sales. Production units = sales units + closing finished stock − opening finished stock. Purchases = materials needed for production + closing material stock − opening material stock. The master budget combines them into a budgeted profit statement and balance sheet. Use it as the yardstick against which actual results are compared each month.
What a budget is and the steps
A budget is a plan expressed in money and quantities for a defined period, approved by management. Budgetary control compares actuals against the budget and acts on the gaps. The steps: set the budget period and calendar (who prepares what, by when, who approves); identify the principal budget factor, the thing that limits the business (usually sales demand, sometimes machine hours or material); prepare the sales budget; build the other functional budgets in order; combine them into the master budget; review for feasibility and cash; approve and issue; and report variances monthly. The cash budget, which shows whether the plan can be paid for, is dealt with in the cash budget guide. A budgeting and forecasting engagement helps a small firm set up this calendar.
Data needed
Sales forecast by product and price, opening and target closing stocks of finished goods and materials, standards for material and labour per unit, wage and material prices, overhead estimates split into fixed and variable, and selling and administration expenses.
The chain
| Budget | Formula in words | Depends on |
|---|---|---|
| Sales | Units × price | Market, capacity |
| Production (units) | Sales + closing stock − opening stock | Sales, stock policy |
| Material usage | Production units × material per unit | Production |
| Material purchase | Usage + closing material − opening material | Material usage, stock policy |
| Labour | Production units × hours per unit × rate | Production |
| Production overhead | Variable per unit × units + fixed | Production |
| Selling and administration | Commission on sales + fixed | Sales |
| Master budget | Budgeted profit statement and balance sheet | All of the above |
Worked example: a footwear unit, one quarter
All figures assumed. The unit makes one style of shoe. Expected sales 12,000 pairs at ₹600. Finished stock: opening 1,000 pairs, target closing 1,500 pairs.
Production budget = 12,000 + 1,500 − 1,000 = 12,500 pairs.
Materials. Per pair: leather 1.2 m² at ₹150 a m² = ₹180, and sole and other material ₹70.
- Leather needed = 12,500 × 1.2 = 15,000 m². Opening leather 1,200 m²; target closing 1,800 m². Purchase = 15,000 + 1,800 − 1,200 = 15,600 m², costing 15,600 × 150 = ₹2,340,000.
- Soles and other material = 12,500 × 70 = ₹875,000, bought as used.
- Material cost charged to production = 12,500 × (180 + 70) = ₹3,125,000.
Labour budget. 0.8 hour per pair at ₹100 an hour = ₹80 a pair; 12,500 × 80 = ₹1,000,000 (10,000 hours).
Overhead budget. Variable ₹40 a pair: 12,500 × 40 = ₹500,000. Fixed ₹600,000 for the quarter (including depreciation). Total ₹1,100,000.
Selling and administration. Commission ₹10 a pair sold: 12,000 × 10 = ₹120,000. Fixed ₹700,000.
Cost per pair for stock valuation. Material 250 + labour 80 + variable overhead 40 = 370, plus fixed overhead 600,000 ÷ 12,500 = 48, giving ₹418 (opening stock assumed at the same value).
| Master budget: profit statement | ₹ |
|---|---|
| Sales (12,000 × 600) | 7,200,000 |
| Opening finished stock (1,000 × 418) | 418,000 |
| Production cost (12,500 × 418) | 5,225,000 |
| Less closing finished stock (1,500 × 418) | (627,000) |
| Cost of goods sold | 5,016,000 |
| Gross profit | 2,184,000 |
| Commission | 120,000 |
| Fixed selling and administration | 700,000 |
| Budgeted profit | 1,364,000 |
Checks: production cost = 3,125,000 + 1,000,000 + 500,000 + 600,000 = 5,225,000 = 12,500 × 418. Cost of goods sold = 418,000 + 5,225,000 − 627,000 = 5,016,000 = 12,000 × 418. Gross profit 7,200,000 − 5,016,000 = 2,184,000. Profit 2,184,000 − 820,000 = 1,364,000.
What the owner decides. The budgeted profit of ₹1,364,000 needs 12,500 pairs produced and 15,600 m² of leather bought, which tells purchasing the quantity and finance the cash it will need (leather 2.34 million; labour 1 million). If the leather supplier cannot deliver, or labour hours (10,000) exceed what the staff can supply, the plan must change before the quarter starts. The owner should check capacity (if 10,000 labour hours is more than available, production is the limit) and cash. See the flexible budget guide for what to do if actual sales differ.
How to read and use the budget
Compare actual against budget monthly, by function, with a named owner for each line. When actual volume differs, compare against a budget restated at actual volume, not the original; otherwise volume gets mixed with efficiency. Material standards behind the budget are analysed in standard costing variances. Budgets should be a target agreed with managers, not a number handed down.
Common mistakes
- Starting with production when sales is the real limit, or the reverse.
- Forgetting closing stock in the production and purchase budgets.
- Treating fixed overhead as if it varies with output.
- Not linking the budget to cash, so a profitable plan is unaffordable.
- Never revising when conditions change.
- Setting budgets without the managers who must meet them.
Need help with budgeting?
If your budget is a single total typed into a spreadsheet, we can help set up the functional budgets, calendar and monthly review through budgeting and forecasting.
Key takeaways
- Start from the principal budget factor, usually sales.
- Production = sales + closing stock − opening stock; purchases follow the same logic for materials.
- The master budget joins the functional budgets into a profit statement and balance sheet.
- Link the budget to cash and capacity.
- Report actual against budget monthly, with an owner for each line.
Read next
- Flexible budget, zero-based budgeting and budget ratios
- Cash budget and cash management
- Standard costing: material and labour variances
Disclaimer: The methods described are standard cost accounting and financial management techniques. The worked example uses an invented business and invented figures, including any tax, interest or exchange rate, which are assumptions for illustration and not current rates. Where the article refers to a legal requirement, the linked guide and the official text should be checked. This article is general information, not legal advice; check the official text before acting.