Anaesthetist billings & income calculator
Anaesthetists don't bill flat item fees — they bill units. Every case = (basic units for the procedure + time units + modifier units) × your dollar-per-unit. Build a week of theatre lists, set your case mix and your rate, and choose how much you bill no-gap (accept the fund rate) versus with a gap (your full rate) — then add pain-medicine and obstetric work, public sessions, your low overhead, and see the after-tax take-home.
Interactive Australian anaesthetist income planner using the Relative Value Guide (RVG) unit system: each case = basic units (procedure complexity, items 20100-21997) + time units (1 per 15 minutes for the first 2 hours then 1 per 10 minutes) + modifier units (ASA physical status, age, emergency) times a dollar-per-unit; build a week of theatre lists, pain-clinic and public-sessional days; split billings between no-gap (fund rate) and known-gap/private (your full rate); add obstetric and pain income; take off the low billing-service and indemnity overhead; and see the after-tax take-home.
Obstetric & on-call (optional)
Public / sessional & salaried (optional)
Rates & units (editable — indicative, verify on MBS Online)
How anaesthesia billing works — the 60-second version
Units, not item fees. Anaesthesia uses the Relative Value Guide: fee = (basic units for the procedure, from items 20100-21997 + time units + modifier units) × a dollar value per unit. Time = 1 unit per 15 min for the first 2 hours (max 8), then 1 unit per 10 min. Modifiers add units for ASA physical status (III +1, IV +2, V +3), age (<4 or ≥75 +1) and emergency (+2); after-hours emergency adds a 50% loading.
The $/unit is where the money is. Medicare's schedule is only ~$23.70/unit; the AMA guide is ~$106. Each anaesthetist sets their own rate — most land $55-$80/unit — so almost every private case has a gap the health fund and patient cover. The no-gap (~$35) and gap (~$75) rates in this tool are the total banked per unit — nothing separate to add.
No-gap vs gap. Under a no-gap arrangement you accept the fund's rate (~$32-$40/unit) and the patient pays nothing — about two-thirds of insured cases end up here. On gap cases you charge your full rate and the patient wears the difference. (A known-gap scheme caps that gap at ~$500, but full-rate billers usually bill outside any scheme, uncapped — this tool models your full rate.) Billing more no-gap is patient-friendly but lowers your $/unit — the biggest driver of your income.
Other streams. Many anaesthetists add a chronic-pain practice (flat-fee interventional procedures + consults), obstetric/on-call epidural work (often after-hours), and public sessional or staff-specialist work.
Low overhead, high income. With no consulting rooms, overhead is small — a billing service (~4.5% of billings) and indemnity (~$5k-$15k/yr, low-risk vs proceduralists). That's why anaesthetists are among the highest-earning specialists (ATO average ≈ $447k).