Business Calculators
Practical Australian business calculators for GST, pricing, margins, markup and break-even planning, built for quick checks without spreadsheets or sign-up.
Use the GST calculator for tax-inclusive and tax-exclusive amounts, then the margin, markup and break-even tools to test pricing and profitability. These are planning tools, so business-specific tax treatment should still be checked against current ATO guidance or professional advice where needed.
How to use these calculators well
- Keep GST, revenue, profit and cash flow as separate measures.
- Use actual fixed and variable costs rather than a generic industry average.
- Reconcile calculator outputs with invoices and accounting records before lodgement.
GST Calculator
Add or remove Australia's 10% Goods and Services Tax from any amount instantly using the standard ATO divide-by-eleven calculation method for GST.
Open calculatorProfit Margin Calculator
Calculate gross profit, net profit and both margin percentages for your Australian business from revenue, cost of goods sold and operating expenses.
Open calculatorMarkup Calculator
Set a selling price from your cost using a target markup or margin percentage, or reverse-engineer both figures from an existing Australian retail price.
Open calculatorBreak-Even Calculator
Work out how many units your Australian small business must sell to cover fixed costs, plus the revenue and profit generated at your expected sales volume.
Open calculatorAustralia Post Cubic Weight Calculator
Calculate Australia Post cubic and chargeable weight from parcel dimensions using the published 250 kg/m³ factor.
Open calculatorBaker's Percentage Batch Calculator
Scale flour, water, salt, yeast and oil to a target dough batch using editable baker's percentages for Australian bakery production.
Open calculatorBAS / GST Payable Calculator
Estimate the net GST and total BAS amount payable or refundable for your Australian business activity statement, including PAYG withholding.
Open calculatorBuffet Food Quantity Calculator
Estimate buffet protein, starch, vegetable and total prepared kilograms from guests and menu portions.
Open calculatorBurn Rate Calculator
Calculate your gross and net monthly burn rate from cash spent and revenue received to track how fast your business is spending cash.
Open calculatorCash Runway Calculator
Estimate how many months your business can operate before running out of cash, based on current balance and burn rate.
Open calculatorCatering Portion Quantity Calculator
Estimate whole catering portions and prepared food kilograms from guests, serves, portion size and contingency.
Open calculatorCoffee Bean Requirement Calculator
Estimate coffee bean kilograms and whole bags from drink count, recipe dose, waste and selected bag size.
Open calculatorContainer Carton Capacity Calculator
Estimate whole-carton container capacity by comparing all six axis-aligned carton orientations in a clear space.
Open calculatorContribution Margin Calculator
Find the contribution margin per unit and as a percentage after variable costs, useful for pricing and break-even decisions.
Open calculatorCost Per Unit Calculator
Calculate the total cost per unit produced or sold by combining fixed and variable costs across your production volume.
Open calculatorCustomer Acquisition Cost Calculator
Calculate your customer acquisition cost by dividing total sales and marketing spend by the number of new customers won.
Open calculatorCustomer Lifetime Value (CLV) Calculator
Estimate customer lifetime value, the CLV to CAC ratio and payback period from average order value, purchase frequency, lifespan and gross margin.
Open calculatorDiscount Pricing Calculator
See the discounted sale price, dollar saving and remaining margin after applying a percentage discount to your product.
Open calculatorDough Hydration Calculator
Calculate baker's dough hydration, total dough mass and water share from weighed flour, water and other ingredients.
Open calculatorEvent Attendance Reconciliation Calculator
Reconcile event confirmations, checked-in confirmed guests and walk-ins to record total attendance, no-shows and show-up rate.
Open calculatorEvent Run-Sheet Duration Calculator
Calculate an event run-sheet duration from repeated sessions, between-session changeovers and total scheduled break minutes.
Open calculatorFreelance Project Quote Calculator
Build a freelance or contractor project quote from hours, hourly rate, expenses and contingency, with target margin and optional GST included.
Open calculatorGross Profit Calculator
Work out gross profit and gross margin from revenue and cost of goods sold for your Australian business.
Open calculatorHourly Charge-Out Rate Calculator
Work out the hourly rate to charge clients based on your annual cost base, target profit and billable hours per year.
Open calculatorIngredient Purchase Quantity Calculator
Calculate raw ingredient purchase kilograms from edible quantity, measured preparation yield and allowance.
Open calculatorInventory Reorder Point Calculator
Calculate when to reorder stock using average daily demand, supplier lead time and safety stock, plus an optional economic order quantity (EOQ).
Open calculatorInventory Shrinkage Calculator
Calculate Australian retail inventory shrinkage units, percentage and ex-GST cost value from book and physical stocktake counts.
Open calculatorInventory Turnover Calculator
Calculate how many times your inventory is sold and replaced over a period, plus the average days stock is held.
Open calculatorInvoice Late Fee Calculator
Calculate late payment fees and interest owed on an overdue Australian invoice using a flat fee, simple interest, compound interest or a mix.
Open calculatorJob Costing Calculator
Add up materials, labour and overhead costs for a specific job to see total cost and profit margin against the price charged.
Open calculatorMulti-Stop Route Time Calculator
Estimate multi-stop delivery route duration from distance, average speed, stop service time and depot activity.
Open calculatorNet Profit Margin Calculator
Calculate your net profit margin percentage after all expenses, interest and tax to gauge overall business profitability.
Open calculatorOperating Expense Ratio Calculator
Calculate your operating expense ratio by dividing operating expenses by revenue to see how much of each sales dollar covers overheads.
Open calculatorPallet Carton Count Calculator
Estimate whole cartons per pallet layer and pallet across two right-angle packing orientations and entered layers.
Open calculatorPayback Period Calculator
Work out how many months or years it takes to recover the cost of a business investment from its net cash inflows.
Open calculatorPayroll Cost Percentage Calculator
Calculate payroll costs as a percentage of revenue to check whether staffing costs are in a sustainable range for your business.
Open calculatorProduct Pricing Calculator
Set a selling price from your unit cost and target margin, showing the resulting markup percentage in dollars.
Open calculatorPurchase Order Fill Rate Calculator
Calculate Australian retail purchase-order unit fill rate and unfilled quantity from ordered and accepted received units.
Open calculatorQuote Margin Check Calculator
Check the profit margin built into a job quote by comparing your quoted price against total estimated costs before you send it.
Open calculatorRetail Sell-Through Rate Calculator
Calculate Australian retail sell-through percentage and remaining units from opening stock, receipts and units sold for one period.
Open calculatorReturn on Investment Calculator
Calculate ROI as a percentage from an investment's cost and the profit or gain it generated over a period.
Open calculatorRevenue Growth Calculator
Calculate the percentage growth in revenue between two periods and the implied compound growth rate over multiple years.
Open calculatorROAS (Return on Ad Spend) Calculator
Calculate return on ad spend (ROAS), gross profit, ROI and break-even ROAS for your marketing or advertising campaign to gauge true profitability.
Open calculatorSales Commission Calculator
Work out sales commission earnings under flat rate, tiered marginal or above-threshold structures, plus total earnings including base salary.
Open calculatorSales Target Calculator
Work out how many units or how much revenue you need to sell to hit a monthly or annual sales target.
Open calculatorScreen Shooting Ratio Calculator
Calculate a screen production shooting ratio and captured minutes beyond the intended finished duration from recorded footage totals.
Open calculatorShelf Facings Requirement Calculator
Estimate Australian retail shelf facings from daily unit sales, refill interval, units held per facing and service buffer.
Open calculatorStock Cover Days Calculator
Estimate Australian retail stock cover days and lead-time margin from saleable units, average daily sales and supplier lead time.
Open calculatorTransactions per Trading Hour Calculator
Calculate Australian retail transactions per open trading hour and per active checkout hour from store operating records.
Open calculatorTrue Cost of an Employee Calculator
Estimate the true annual cost of employing staff in Australia, covering super, workers compensation, leave overhead and on-costs beyond salary.
Open calculatorWorking Capital Calculator
Calculate working capital and the current ratio from your current assets and current liabilities to check short-term financial health.
Open calculatorRelated Australian guides
Go beyond the result and review the assumptions, source material and decision checks that matter for this category.