What a budget is for
A budget is a written plan for the money you expect to earn and spend over a period, usually a month or a year. It is not a prediction you must hit or a rule you fail by missing. Its value is that it forces you to state your assumptions, so that when reality differs you can see where and why.
Start with cautious income estimates
Optimistic revenue is the most common budgeting mistake. A safer habit is to estimate income from things you can reasonably support: past sales, current customers, signed work or a modest number of new customers. If you have no history, use a deliberately low estimate and treat anything above it as a bonus.
Break revenue into units rather than one lump figure. For a hypothetical home-repair service, expecting 40 jobs a month at an average of $150 gives $6,000. That is easier to examine than a bare “$6,000”, because you can ask whether 40 jobs is realistic given your available hours.
List your costs in two groups
Fixed costs stay about the same regardless of sales, such as rent, insurance and subscriptions. Variable costs rise and fall with activity, such as materials, packaging and card processing fees.
Continuing the hypothetical example, assume:
- Materials: 25 percent of sales, so $1,500 on $6,000
- Rent for a small workspace: $800
- Insurance: $120
- Software subscriptions: $100
- Marketing: $300
- Phone and internet: $90
- Vehicle costs: $250
Fixed items add up to $800 + $120 + $100 + $300 + $90 + $250 = $1,660. Adding materials of $1,500 gives total costs of $3,160. Subtracting from expected sales of $6,000 leaves $2,840.
Do not forget the owner and the taxes
A budget that ignores your own pay is not realistic. In this example, suppose the owner plans to withdraw $1,800 a month. That leaves $2,840 minus $1,800, or $1,040. This remainder should not be treated as spare money. Part of it likely needs to be set aside for taxes, which depend on your location and structure, and part should build a reserve for slow months, equipment repairs or late-paying customers. All figures here are invented for illustration.
Include irregular costs too. Annual insurance premiums, license renewals and equipment replacement are easy to miss because they do not appear every month. Divide the yearly amount by twelve and set that money aside monthly.
Compare budget with actual results
A budget only works if you check it. After each month, record what really happened and calculate the difference, called a variance.
Imagine the actual month brought in 36 jobs, or $5,400, and materials still cost $1,500 because some supplies were bought in bulk. Fixed costs were $1,660 as planned. Total costs were $3,160 again, and what remained was $5,400 minus $3,160, or $2,240. Compared with the budgeted $2,840, that is $600 lower.
The variance tells a story: sales were $600 below plan, while costs did not shrink with them. Useful questions follow. Was 40 jobs too ambitious? Should materials be bought in smaller amounts? Is the price high enough to cover the quiet months? Good expense tracking makes this review quick, because the figures are already sorted.
Keeping the budget useful
- Revise it, do not abandon it. If assumptions prove wrong for several months, update them. A budget that never changes is as unhelpful as none.
- Review on a schedule. A short monthly business review is usually enough for a small company.
- Link spending to goals. Marketing money should connect to a purpose; setting a marketing budget separately from the overall plan often leads to arbitrary numbers.
- Test price changes. If the budget never works at current prices, consider whether your pricing strategy covers all your costs, including your own time.
- Watch a few key measures. Choose a handful of key performance indicators, such as sales per month and the share of sales spent on materials, rather than tracking everything.
- Plan for downside. Create a lower version of the budget and see whether the business could cover essentials if sales fell by, say, a fifth.
Limits of a budget
A budget is only as good as its assumptions, and no estimate guarantees results. New businesses in particular often find costs higher and sales slower than expected, so building a cushion into the plan is sensible. For questions about taxes, loans or legal obligations affecting your budget, speak with a qualified accountant, since requirements vary by place.