Bringing on your first associate doctor is one of the clearest signs a practice has moved past its early stage – but it’s also one of the decisions most likely to be made with more instinct than planning. It’s an exciting step: more capacity, more patients seen, and the beginning of a practice that doesn’t depend entirely on one doctor’s personal hours. Getting the financial and legal foundations right from the start makes an enormous difference to how smoothly that growth actually plays out.
Employee, Contractor, or Something in Between?
The first decision, and one of the most consequential, is how the associate will be engaged. Most practices default to a service or contractor arrangement, where the associate operates their own billing and pays the practice a service fee for use of rooms, staff, and facilities. This is common in general practice specifically, but it comes with conditions that need to be genuinely met, not just assumed.
If an arrangement functions more like employment in practice, set hours, direction over how work is performed, no real independence in running their own patient list, it may need to be treated as an employment relationship regardless of how the paperwork describes it. Getting this classification wrong has consequences for superannuation guarantee obligations, payroll tax, and potential penalties if reviewed later.
Revenue-Sharing and Fee Structures
However the associate is engaged, the revenue split needs to be clearly defined and properly documented, not a verbal understanding that gets revisited informally over time. Common structures include a percentage-based service fee, a flat facility fee, or a hybrid model, and the right choice depends on patient volume expectations, overhead costs, and how much risk each party is carrying.
It’s worth modelling a few different scenarios before finalising terms, including a lower-than-expected patient volume in the associate’s early months, so the arrangement remains sustainable for both sides even if growth is slower than hoped initially.
Payroll Tax Implications
Payroll tax is one of the areas most likely to catch practice owners off guard when bringing on an associate, particularly across state lines where thresholds and rules differ. Some jurisdictions have specifically targeted medical practice service arrangements in recent years, treating certain contractor payments as wages for payroll tax purposes even where the arrangement was structured as an independent contracting relationship.
This makes it essential to review payroll tax exposure specifically before finalising an associate arrangement, rather than assuming existing structures used by other practices will automatically apply the same way in your situation.
Superannuation and Insurance Considerations
If the associate is genuinely engaged as an employee (or is later reclassified as one), superannuation guarantee contributions become an ongoing obligation, calculated and paid on time each quarter. Beyond super, practices should also confirm the associate carries appropriate professional indemnity insurance and that the practice’s own insurance covers the expanded scope of having an additional practitioner on site.
Bookkeeping and Payroll Systems
Adding an associate, whether as a contractor or employee, increases the complexity of day-to-day financial administration. Billing needs to be tracked and reconciled per practitioner, service fees or wages need to be calculated accurately each pay cycle, and reporting obligations (STP, superannuation, payroll tax where applicable) all scale up with each additional practitioner. This is exactly the kind of operational load that well-structured bookkeeping support is designed to absorb, so growth in practitioner numbers doesn’t translate into administrative strain for the practice owner. Our earlier article on how bookkeeping saves time and reduces errors for doctors covers this in more detail.
Setting Up for a Second (or Third) Associate
Practices that get the first associate arrangement right,clear documentation, correctly classified engagement, sustainable revenue split, usually find that adding a second or third associate later is far more straightforward, since the template already exists. Practices that rush the first arrangement without proper structure often find themselves renegotiating or correcting issues just as they’re trying to bring on more practitioners, which slows growth rather than supporting it.
Where Business Advisory Fits In
Bringing on an associate isn’t purely an operational decision – it’s a growth decision that affects practice valuation, future succession options, and overall business structure. This is where business advisory support becomes genuinely useful, helping model the financial impact of the new arrangement realistically and making sure it’s structured in a way that supports the practice’s broader direction, not just the immediate need for more capacity.
Final Thoughts
Hiring your first associate doctor is a meaningful growth milestone, but it comes with financial and legal details that are far easier to get right from the outset than to correct later. Engagement classification, revenue-sharing structure, payroll tax exposure, and superannuation obligations all need to be considered together, properly documented, and reviewed periodically as the practice continues to grow. At MediSuccess, we help practice owners work through exactly this kind of decision before an arrangement is finalised, so growth happens on a solid foundation rather than one that needs revisiting later. If you’re considering bringing on your first associate, reach out to our team – it’s a conversation worth having before contracts are signed, not after.
Frequently Asked Questions
It depends on how the working arrangement actually functions day to day, genuine independence supports a contractor arrangement, while set hours and direct control typically point toward employment, regardless of how the contract is written.
This varies by specialty and location, but common structures involve a percentage-based service fee or a flat facility fee. The right split should be modelled against realistic patient volume, not just industry norms.
Potentially, yes if the contractor arrangement doesn’t meet genuine independence criteria, superannuation guarantee obligations may still apply regardless of the contract’s label.
Some jurisdictions treat certain associate payment structures as taxable wages for payroll tax purposes, even under contractor arrangements. This needs to be reviewed against your specific state’s current rules.
A clearly written service agreement or employment contract outlining the revenue or wage structure, responsibilities, insurance requirements, and terms for ending the arrangement.
It adds complexity, per-practitioner billing reconciliation, payroll or service fee calculations, and additional reporting obligations, which is where dedicated bookkeeping support becomes valuable.
Yes, though it’s far easier to renegotiate a well-documented arrangement than to unwind an informal one, which is why proper structure from the outset matters
It can still make sense for capacity reasons alone, but it’s worth considering how the arrangement fits your broader plans, including eventual succession, before finalising terms.
