Lesson Overview
A budget is more than a spreadsheet — it’s your financial roadmap. In this lesson, you’ll learn how to create a simple but powerful budget for your startup, how to track it, and how to use it to make confident business decisions. By combining your revenue projections (Lesson 1) and cost structure (Lesson 2), you’ll have a clear plan for managing your money month by month.
Learning Objectives
By the end of this lesson, you will be able to:
- Define what a budget is and why it matters for startups.
- Build a realistic startup budget using revenue and cost data.
- Understand the difference between planned and actual figures.
- Use your budget to guide decision-making and control spending.
About You and Your Enterprise
Your budget should reflect your business reality, not an idealised version. That means being honest about both your expected income and your unavoidable costs. Do you regularly track your income and expenses? Think about whether there are costs you often forget, like small fees or maintenance. Also, consider how you would handle things if your actual sales were 20% lower than you planned.
1. What is a Budget?
A budget is a financial plan that estimates income and expenses over a set period (usually monthly or yearly).
It’s your guide to:
- Planning – deciding what you can afford to do.
- Monitoring – checking if you’re on track.
- Controlling – adjusting when reality doesn’t match your plan.
2. Why Budgeting Matters for Startups
For early-stage businesses, a budget:
- Helps prevent overspending.
- Shows whether your pricing covers your costs.
- Highlights cash flow gaps before they become crises.
- Builds credibility with investors and lenders.
Example:
A food truck startup budgets £2,000/month for ingredients, but in practice spends £2,600. Without a budget, the overspend could quietly drain cash reserves.
3. Planned vs. Actual
A budget is not set in stone — it’s a forecast.
You should regularly compare:
- Planned – what you expected to happen.
- Actual – what really happened. The difference (variance) tells you where you need to adjust.
4. Building Your Startup Budget
Step 1: List your projected revenue for each month.
Step 2: List your fixed monthly costs.
Step 3: Estimate variable costs based on expected activity.
Step 4: Subtract total costs from total revenue to see projected profit or loss.
Step 5: Review and adjust monthly.
Example – Monthly Budget:
| Category | Planned (£) | Actual (£) | Variance (£) |
|---|---|---|---|
| Revenue | |||
| Product Sales | 3,000 | 2,800 | -200 |
| Service Income | 1,200 | 1,200 | 0 |
| Total Revenue | 4,200 | 4,000 | -200 |
| Fixed Costs | |||
| Rent | 500 | 500 | 0 |
| Insurance | 50 | 50 | 0 |
| Variable Costs | |||
| Materials | 800 | 900 | +100 |
| Marketing | 150 | 200 | +50 |
| Total Costs | 1,500 | 1,650 | +150 |
| Net Position | 2,700 | 2,350 | -350 |
5. Tips for Effective Budgeting
- Be realistic – overestimating revenue or underestimating costs creates problems.
- Include everything – small costs add up (subscriptions, travel, supplies).
- Review monthly – adjust projections based on actual performance.
- Plan for lean months – set aside surplus from strong months to cover slow ones.