Two tradies decide to go into business together. Maybe they've been mates for years, maybe they complement each other's skills — a sparky and a data cabler, two plumbers with different specialisations. A partnership seems like the natural choice.

But many trade partnerships fail — not because of skill or work, but because of money: how profits are split, who's liable for whose mistakes, and what happens when one partner wants out. Understanding how partnerships work legally and financially before you commit can save you years of grief.

What Is a Business Partnership?

A partnership is a business structure where two or more people carry on a business together with a view to profit. In Australia, partnerships are defined and regulated by state-based partnership legislation (the Partnerships Act in each state).

Unlike a company, a partnership is not a separate legal entity — the partnership is simply the partners trading together. Each partner is personally liable for the debts and obligations of the partnership.

The four main business structures for tradies, compared:

  • Sole trader — 1 person — Personal marginal rate — Unlimited personal
  • Partnership — 2+ people — Each partner's marginal rate — Unlimited personal (joint and several)
  • Company — 1+ shareholders — 25% (small business) — Limited to share capital
  • Trust — Beneficiaries — Distributed to beneficiaries — Trustee personal/corporate

How Partnership Income Is Taxed

A partnership itself doesn't pay income tax. Instead, the partnership lodges a partnership tax return showing the partnership's net income, and that income is then distributed to each partner according to their agreed profit share. Each partner includes their share in their individual tax return and pays tax at their marginal rate.

Example: Two plumbers — Kim and Jake — operate a partnership with a 50/50 profit split. The partnership earns $300,000 net profit.

  • Kim's share: $150,000 → taxed at her marginal rate
  • Jake's share: $150,000 → taxed at his marginal rate

If both are in the 34.5% tax bracket, each pays approximately $44,250 in tax on their share.

Compared to a sole trader: If Kim were a sole trader earning $300,000 alone, she'd pay approximately $101,667 in income tax. The partnership splits the income across two returns, potentially reducing the total family tax bill — though at $150,000 each, both are well into the same marginal rate.

The tax advantage of partnerships is strongest when partners are in different tax brackets. A 60/40 or 70/30 split where one partner has lower income can reduce the total tax bill meaningfully.

The Partnership Agreement: Non-Negotiable

Before you operate a single day as a partnership, you need a written partnership agreement. Without one, state-based Partnership Acts apply default rules — and those defaults may not reflect what you actually want.

What a Partnership Agreement Must Cover

Profit and loss sharing: What percentage goes to each partner? Does this match their capital contribution, time commitment, and skill? A 50/50 split for partners who contribute unequally breeds resentment fast.

Capital contributions: How much did each partner put in? What happens to that money if the partnership dissolves?

Decision-making: Who can make what decisions unilaterally? Who needs the other's agreement? Who signs cheques? Who can take on new debt?

Drawings: How much can each partner withdraw from the business each week without the other's agreement? Many partnerships break down over one partner drawing more than agreed.

Dispute resolution: If partners disagree on a major decision, what happens? A mediator? A buy-out clause? Without this, a 50/50 partnership can be completely deadlocked.

Exit provisions: What happens if one partner wants to leave? Can they sell their share to a third party? Does the remaining partner have right of first refusal? At what price?

Death or incapacity: If a partner dies or becomes permanently incapacitated, what happens to their share? Does the partnership continue?

A solicitor experienced in commercial and business law should prepare this agreement. The cost ($1,500–$4,000) is trivial compared to the cost of dissolving a partnership without one.

The Liability Problem: Joint and Several

This is the most dangerous feature of a partnership for tradies, and the most commonly misunderstood.

In a partnership, each partner is jointly and severally liable for the debts and obligations of the partnership. This means:

  • A creditor can pursue either partner (or both) for the full amount of a debt
  • You are personally liable for your partner's business debts and mistakes
  • If your partner takes out a loan in the partnership name without your knowledge, you owe it
  • If your partner's negligence causes a $500,000 public liability claim and the insurance doesn't cover it, you're personally responsible for the full amount

Real-world scenario:
Marcus and Dave run a carpentry partnership. Dave, without consulting Marcus, orders $60,000 in materials from a supplier on credit. The job falls through. The supplier sues the partnership. Marcus is personally liable for the full $60,000 — even though he knew nothing about the order.

This "joint and several" liability is a fundamental risk of partnerships. It's why many established trade businesses prefer a company structure — which limits liability to the company's assets, not the director's personal assets (subject to exceptions).

How to mitigate:

  • Require two signatures for commitments above a set amount
  • Clear partnership agreement specifying each partner's authority
  • Strong professional liability and public liability insurance
  • Regular financial reviews between partners

Registering a Partnership

Business Name

If you trade under a name other than your own combined names (e.g., "Smith & Jones Electrical" rather than "John Smith and Peter Jones"), you must register the business name with ASIC. This costs approximately $39/year for 1 year or $92 for 3 years.

ABN

The partnership needs its own ABN — separate from each partner's individual ABNs. Register at abr.gov.au.

GST

If the partnership's turnover is $75,000+, register for GST. The partnership's BAS and GST obligations apply to the partnership entity — not to individual partners.

Tax File Number

The partnership needs its own TFN to lodge the partnership tax return. Apply through the ATO.

Bank Account

Open a dedicated partnership bank account in the partnership's name. Never mix partnership funds with personal accounts.

Superannuation in a Partnership

Partners are not employees of the partnership — they're owners. This means:

  • No employer super guarantee applies to partners
  • Partners are responsible for their own super contributions
  • Each partner contributes voluntarily as a self-employed person

Making regular super contributions is critical for partners. Without an employer making contributions automatically, it's easy to fall behind. Many partnership agreements specify a minimum super contribution requirement for each partner — enforced within the agreement rather than relying on each partner's self-discipline.

The Partnership Tax Return

The partnership lodges an annual Partnership Tax Return (not an individual return and not a company return). This return shows:

  • The partnership's total income
  • The partnership's total deductions
  • Net partnership income
  • Each partner's share of net income (as per the partnership agreement)

Each partner's share then flows to their individual tax return.

Lodgement deadline: 31 October if self-lodging; later dates may apply if using a registered tax agent.

Cost: Typically $500–$1,500 per year for an accountant to prepare, in addition to each partner's individual return.

Goods and Services Tax (GST) for Partnerships

The partnership registers for GST and lodges a single BAS covering all partnership activities. Individual partners don't separately lodge for the partnership's GST.

Each partner's personal activities outside the partnership (if any) are handled separately.

When a Partnership Works Well

Partnerships suit trades businesses where:

  • Partners have complementary skills: One is technical, one handles client relationships and admin
  • Capital contribution is clear and agreed: Both partners put in defined amounts from the start
  • Trust is genuine and documented: Longstanding relationships with a shared track record
  • Exit planning is addressed: Both partners have thought through what happens when one wants out
  • The income split matches the contribution split: A 50/50 business with an 80/20 effort split breeds resentment

When a Partnership Is the Wrong Structure

Consider alternatives when:

  • There's significant personal asset risk: A company limits liability; a partnership doesn't
  • Income levels are similar and marginal rates are the same: No tax benefit from income splitting between partners in the same tax bracket
  • There's a trust deficit: If you wouldn't lend this person $100,000 without paperwork, don't enter a partnership
  • Growth is planned: Companies and trusts scale better than partnerships; restructuring later is costly
  • One partner is carrying disproportionate risk: Different liability exposure suggests different structures

Dissolving a Partnership

When a partnership ends — planned or unplanned — the process involves:

  1. Agreement to dissolve: Partners agree (or a court orders) the partnership to end
  2. Asset realisation: Business assets are sold or distributed
  3. Debt settlement: All partnership debts are paid from assets
  4. Partner balances paid: Any remaining capital is returned to partners per their agreement
  5. Deregistration: Cancel the partnership ABN, TFN, and business name

Tax on dissolution: Distribution of assets on dissolution can trigger CGT events. Get advice before dissolving.

If partners can't agree: A formal dissolution through the courts is possible but expensive. Good partnership agreements with dispute resolution clauses avoid this.

Partnership vs Company: Which Should Tradies Choose?

  • Setup cost — Low ($2,000–$4,000 for agreement) — Moderate ($1,000–$2,000 for setup)
  • Annual compliance cost — Low–Medium ($1,500–$3,000) — Medium–High ($3,000–$6,000)
  • Personal liability — Unlimited (joint and several) — Limited (subject to exceptions)
  • Tax rate — Marginal rates (each partner) — 25% (small business rate)
  • Income splitting — Between partners only — Via dividends or salary
  • Trust in structure — Requires strong partner relationship — Company can have multiple directors
  • Flexibility — Lower — Higher

For most tradie partnerships with more than $200,000 in combined profit, moving to a company structure (or a unit trust) provides better asset protection and tax flexibility.

Frequently Asked Questions

Q: Can partners have different profit shares in different years?
Yes, but this must be specified in the partnership agreement. A variable profit-sharing arrangement (e.g., based on revenue each partner generates) is legitimate, provided it's agreed in advance and documented.

Q: What happens if one partner goes bankrupt?
A partner's bankruptcy can trigger dissolution of the partnership under state legislation (unless the agreement provides otherwise). The bankrupt partner's share in the partnership may vest in their bankruptcy trustee. This is a major risk — address it in the partnership agreement.

Q: Can one partner buy out the other?
Yes. The partnership agreement should specify the process and pricing for a buyout — ideally with an agreed valuation method. Without this, buyout disputes can be protracted and expensive.

Q: Is a partnership better than both running separate sole traders?
Sometimes. If the partners genuinely share work, costs, and clients, a partnership provides cleaner accounting and a single ABN. Two separate sole traders contracting to each other is messier and can trigger PSI concerns. If the work is genuinely joint, a partnership is cleaner. If work is genuinely separate, separate businesses may be simpler.