Partnership Agreements: Why a Handshake Will Cost You
Two mates, one good idea and a 50/50 split agreed over beers — that's how most Australian partnerships start. It's also how a lot of them end: in a dispute that costs ten times what a proper agreement would have. Here's what a partnership actually signs you up for, and why the paperwork matters more than almost anything else you'll do in year one.
What a partnership legally is (and isn't)
A partnership isn't a thing you register into existence. Legally, it's a relationship — two or more people (or companies, or trusts) carrying on a business in common with a view to profit. There's no certificate, no ASIC registration of the partnership itself, and under each state's Partnership Act a partnership can exist purely because of how you've behaved. Split the profits of a business with someone and a court can find you were partners whether you signed anything or not.
The basics:
- Two to 20 partners. The Corporations Act caps general partnerships at 20 members (some professions, like accountants and lawyers, get higher limits under the regulations). More than that and you generally need a company.
- No separate legal entity. The partnership can't own property or sign contracts in its own right — the partners do, together. This is the fundamental difference from a company, and it drives everything below. If you're still choosing a structure, start with our guide to sole trader, company or trust.
- Each partner is an agent of the others. Your partner can sign contracts and take on debts that bind you, in the ordinary course of the business, without asking you first.
Joint and several liability, in plain English
This is the part that should make you sit up. Partners are jointly and severally liable for the partnership's debts. "Severally" means individually — a creditor doesn't have to chase each partner for their half. They can pick whichever partner has assets and pursue that person for 100% of the debt.
Play it out. Your partner orders $80,000 of stock on the partnership's account, then goes bankrupt or disappears. The supplier can sue you — just you — for the full $80,000, and your house, car and savings are all exposed. You're liable for debts you didn't know about, and "we agreed he'd handle purchasing" is not a defence against an outside creditor.
A partnership agreement can't remove this liability to outsiders — nothing can, short of changing structure. What it can do is give you the right to recover your partner's share from them, and reduce the odds of the mess happening in the first place.
Why "we're mates, we don't need paper" fails
Nobody signs a partnership agreement because they expect a fight. You sign one because the four most common partnership killers are entirely predictable:
Money. One partner wants to reinvest profits; the other wants to draw them out. One racks up expenses the other considers personal. Without an agreed profit split and drawings policy, every dollar becomes a negotiation.
Effort. The 50/50 split agreed on day one assumed equal effort. Two years in, one partner is doing 70-hour weeks while the other has drifted to part-time — but the profit split hasn't moved. This is probably the single most common source of partnership resentment, and a handshake deal has no mechanism to fix it.
Exit. A partner wants out — new job, burnout, moving interstate. What's their share worth? Who values it? Can they sell to an outsider you've never met? Under the default Partnership Act rules, one partner leaving can dissolve the entire partnership, forcing a wind-up of a perfectly good business because nobody wrote down a better process.
Death and divorce. If a partner dies, their share passes to their estate — you could find yourself in business with a grieving spouse who's never seen the books, or negotiating a buyout with their kids' lawyers. Divorce is similar: a partner's interest is an asset in their property settlement, and the Family Court doesn't care how awkward that is for you.
Mates don't fall out because they signed an agreement. They fall out because they didn't, and then had to negotiate all of the above mid-crisis.
The ATO angle: prove your partnership exists
The ATO cares about your partnership because a partnership splits income — and income splitting is something it watches closely. A partnership needs its own TFN and ABN (see how to register an ABN) and lodges its own tax return showing how profit was distributed. If the ATO ever questions whether your partnership is genuine, or whether the 50/50 split reflects reality, your written agreement is the first piece of evidence that settles it. No agreement, and you're arguing from bank statements and memory.
Loans vs capital: document what the money is
Here's a trap that catches people constantly. You put in $60,000 to get the business going; your partner puts in $10,000 and their time. Is your extra $50,000:
- capital — increasing your ownership stake and entitling you to a bigger share on wind-up, or
- a loan to the partnership — repayable to you (possibly with interest) before profits are split?
The tax and legal outcomes are completely different, and if nothing is in writing, expect a fight about it precisely when the money matters most — on exit or wind-up. Document every contribution: amount, date, and whether it's capital or a loan, on what terms. Your accountant will thank you, and so will your future self.
The payment platform angle: frozen funds
A modern failure mode the old textbooks don't mention: payment platforms freezing your money. PayPal, Stripe and similar platforms routinely hold or freeze funds when something about an account changes or a dispute lands — and one of the things that triggers it is uncertainty about who actually owns the business.
The classic scenario: the account was set up in one partner's name back when things were friendly. You fall out. Your ex-partner emails the platform claiming the account and its balance are theirs. The platform does what risk teams do — freezes everything pending evidence of ownership. Now your trading income is locked while you scramble to prove a business relationship you never documented. A written partnership agreement, a partnership ABN and a partnership bank account in the right name are exactly the evidence that resolves this quickly — or prevents it entirely. While the money's frozen, you've still got rent and suppliers to pay, which is why we bang on about cash flow management buffers.
What a good partnership agreement covers
A partnership agreement is one of the small set of documents every multi-owner business needs — see our rundown of the nine contracts small businesses actually use. At minimum it should cover:
| Clause | The question it answers |
|---|---|
| Contributions | Who put in what — money, assets, IP, time — and whether it's capital or a loan |
| Profit and loss split | Who gets what share, and how drawings work day to day |
| Roles and decision rights | Who runs what, what needs unanimous agreement (borrowing, big spends, hiring), spending limits |
| Dispute resolution | Mediation before litigation — a cheap clause that saves fortunes |
| Exit and buyout | How a partner leaves, how their share is valued (formula or independent valuer), payment terms, first right of refusal |
| Death and TPD | What happens to a deceased or permanently disabled partner's share — often paired with insurance-funded buy/sell terms |
| Restraint of trade | Whether a departing partner can set up next door and take the clients |
| New partners | How someone gets admitted, and on what terms |
The exit valuation clause deserves special attention. "Market value" sounds fine until you discover you and your ex-partner's valuers are $300,000 apart. Agree the method now — a formula, an agreed multiple, or a jointly appointed independent valuer whose decision binds everyone.
Get the agreement drafted or at least reviewed by a lawyer. Template agreements exist and are far better than nothing, but a few hundred dollars of tailoring is cheap insurance on a business relationship worth six or seven figures.
Partnership tax basics
The partnership itself pays no income tax. It lodges an annual partnership return showing income, deductions and how the net result was distributed, and then each partner declares their share in their own return and pays tax at their own marginal rate — whether or not they actually drew the money out. A $100,000 profit split 50/50 means you're each taxed on $50,000 even if every cent stayed in the business bank account.
Other points that surprise people:
- Partners can't be employees of the partnership. You can't pay yourself a wage; what you take out are drawings, which aren't a deductible expense. "Partner salaries" in the agreement are really just a first slice of the profit split.
- No super happens automatically. There's no super guarantee for partners — you're self-employed. You can make personal super contributions and generally claim a deduction for them, but nobody does it for you. (Actual employees of the partnership are a different story — normal super and PAYG withholding rules apply to them.)
- GST is measured at partnership level. The partnership must register for GST once its turnover hits $75,000 (as at August 2026).
- Losses flow through. Unlike a company or trust, partnership losses land in your personal return, subject to the non-commercial loss rules.
The alternative: maybe don't be a partnership
Here's the honest advice an accountant gives over coffee: for two or more unrelated parties building a serious business, a company with a shareholders agreement is usually the better structure. You get limited liability (the thing a partnership can never give you), a clean way to own unequal shares, a 25% tax rate on retained profits for most small companies, and a structure investors and banks understand. Registration costs $636 through ASIC (as at August 2026) — trivial against the liability exposure it removes. The shareholders agreement then does the same job as a partnership agreement: exits, valuations, deadlock, death.
Partnerships still make sense where the parties are spouses or family, the risk profile is low, losses are expected early (they flow through to you), or simplicity genuinely matters. But pick the structure deliberately — our company structure guide covers costs and tax in detail.
Key takeaways
- A partnership is a legal relationship, not an entity — it can exist without paperwork, but the default state-law rules that then apply are terrible for you.
- Joint and several liability means any partner can be chased for all partnership debts, including ones another partner created. Your personal assets are on the line.
- A written agreement is also evidence: for the ATO (profit splits, loan vs capital contributions) and for payment platforms like PayPal and Stripe that freeze funds when business ownership is unclear.
- Cover contributions, profit split, decision rights, dispute resolution, exit valuation, death/TPD and restraint — and agree the valuation method before you need it.
- The partnership pays no tax itself: partners are taxed individually on their share whether or not they draw it, get no automatic super, and can't be employees of their own partnership.
- For unrelated parties, a company with a shareholders agreement is often the better answer — limited liability alone usually justifies the $636 setup cost.
Where to get help
- ATO — partnership tax obligations — returns, TFN/ABN and distributions.
- business.gov.au — partnership structure — overview and state Partnership Act links.
- ASIC — business name registration and current fees.
- Your accountant — before you form the partnership, not after.
- A commercial lawyer — to draft or review the agreement itself.
General information only. This guide doesn't take your personal or business circumstances into account and isn't financial, legal or tax advice. Rates and thresholds change — confirm current figures with ato.gov.au or your accountant before acting.