Build annual business budgets with departmental allocations, monthly breakdowns, and budget-vs-actual variance charts.
Builds a full-year operating budget from a small set of inputs: the fiscal year, one annual total per department, and a rule for spreading each total across the 12 months. It returns a month-by-month budget table, a department summary that reconciles to the company total, and a budget-versus-actual chart that updates as you log real spending. The thing people most often misread is the variance sign: the chart defines variance as actual minus budget, so a positive bar means overspending. The other common slip is entering a monthly number where the form asks for the annual total.
A concrete input and expected output from the current implementation.
Input
Fiscal year 2026. Departments: Marketing, annual budget $120,000, even monthly split; Retail, annual budget $130,000, holiday profile with monthly weights 1 for January through November and 2 for December. Actuals logged for March: Marketing $10,400, Retail $8,100.
Expected output
Monthly budget: Marketing $10,000 and Retail $10,000 in every month January through November, a $20,000 per month total; December is $10,000 plus $20,000, for $30,000. Annual totals: Marketing $120,000, Retail $130,000, company $250,000. March variance: $18,500 actual against $20,000 budget, a variance of -$1,500 (-7.5%), labeled favorable because spending came in under budget.
Marketing's even split is 120,000 / 12 = $10,000 per month, and Retail's weights sum to 13, so each weight unit is 130,000 / 13 = $10,000: $10,000 for 11 months, $20,000 in December, with the year still totaling $250,000. March variance is actual minus budget, 18,500 - 20,000 = -$1,500, which is -7.5% of the $20,000 budget and is labeled favorable because it is under budget.
Each department's annual total is divided across the 12 months. An even split assigns annual / 12 to every month. A weighted profile gives each month a weight, and a month receives annual x (its weight / sum of all weights), so a double-weight month gets twice the share. Figures round to whole dollars, and any rounding remainder lands in December so the year sums back to the annual total.
You log actual spending per department per month, either in bulk or as you go. The tool computes variance as actual minus budget: positive means over budget (unfavorable), negative means under budget (favorable). Results appear as a bar chart with budget and actual per month, a table with absolute and percentage variance, and totals per department that reconcile against the year-end budget.
The monthly breakdown recomputes from the new annual total, so every month's budget line changes, including months already past. Actuals stay exactly as logged, which means variances for those past months change too, because they are recomputed against the new budget. Edit before logging if you want history to stay stable.
No. It is a planning template for departmental operating spend: every dollar is a plain expense line, with no payroll, tax, or balance-sheet logic, and everything you enter is processed in your browser with nothing uploaded. For tax or cash-flow questions, use an accounting package or your accountant.
The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.
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