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Explore formula guides that explain the equations, variables, and assumptions behind each calculator.
465 Formulas
Supporting formulas across every calculator category.
Accountants Hourly Rate FormulaLearn how to calculate an accountant's required hourly and daily charge-out rate from income goals, overheads, p...View formula→Accountants Hourly Rate FormulaLearn how to calculate an accountant's required hourly rate from monthly income goals, overheads, recoverable ex...View formula→Accountants Invoice Total FormulaLearn how to calculate an invoice subtotal, discount, taxable amount, tax and final total.View formula→Accountants Invoice Total (Daily) FormulaLearn how to calculate an accountant's daily invoice total from time charges, expenses, discounts, and sales tax...View formula→Accountants Invoice Total (Hourly) FormulaLearn how an hourly accountant invoice total is calculated from time fees, reimbursable expenses and tax.View formula→Accountants Invoice Total (Monthly) FormulaLearn how a monthly accounting invoice total is calculated from a retainer, extra work, expenses, discount and VAT.View formula→Accountants Labour Cost FormulaLearn how to calculate the fully loaded annual, monthly and hourly cost of employing accounting staff.View formula→Accountants Labour Cost (Daily) FormulaLearn how daily accounting team labour cost is calculated from wages, employer on-costs and team-wide extras.View formula→Accountants Labour Cost (Hourly) FormulaLearn how to calculate an accountant's full cost per productive hour and a cost-based suggested hourly charge-ou...View formula→Monthly Labour Cost FormulaLearn how monthly labour cost is calculated from wages, employer payroll costs, pension contributions and regula...View formula→Late Payment Interest (Daily) FormulaLearn how daily simple interest, total accrued interest and the total amount due are calculated for an overdue i...View formula→Accountants Late Payment Interest (Hourly) FormulaLearn how simple late payment interest is calculated on an overdue accountancy invoice using an annual rate and...View formula→