AusCalc

For an Australian tax debt paid to the ATO by instalments: the monthly payment and the general interest charge (GIC) it adds over the plan, plus the GIC if nothing is paid for a year, at the current GIC rate.

ato_payment_plan

Add 10% Australian GST to an amount, or work out the GST included in a GST-inclusive amount.

gst

Work out the day rate and hourly rate (excluding GST) an Australian contractor must charge to match a target employee salary, allowing for super, leave, public holidays, sick days, downtime and overheads.

contractor_day_rate

Convert an Australian contractor day rate (excluding GST) into the equivalent employee salary and estimated take-home pay, after leave, holidays, sick days, downtime, overheads and super.

day_rate_to_salary

Estimate Australian income tax, Medicare levy and take-home pay for a sole trader or ABN holder from their yearly business income and expenses, using the current financial year ATO resident rates. Also says how much to set aside each quarter. Use for questions like "how much tax will I pay on $90k as a sole trader in Australia".

sole_trader_tax

How much compulsory employer super (the super guarantee) is paid on an Australian salary, at the current financial year rate, paid on top of the salary.

super_guarantee

For someone with a job plus side income (side hustle, freelance, ABN work) in Australia: how much extra tax the side income adds and what share of it to set aside, with or without a HECS/HELP debt, on current financial year rates.

side_income_tax_set_aside