IRS Notice of Deficiency on Minnesota Partnerships from Australia
Australians who own interests in United States partnerships, or who run Minnesota-based businesses through a US entity, often assume the Internal Revenue Service operates far away from their daily lives in Sydney or Melbourne. The reality is that the IRS can issue a statutory Notice of Deficiency, sometimes called a "90-day letter," directly to an Australian resident whose name appears on a US partnership return. Once that envelope arrives, the clock starts ticking under US federal law, regardless of whether the taxpayer spends most of the year in Brisbane, Perth, or Adelaide.
A Notice of Deficiency for a large partnership adjustment is not the same as a routine audit letter. It signals that the IRS has completed its examination, disagreed with the position reported on the partnership's return, and proposes a specific dollar amount of additional tax. For partnerships with assets above the threshold set under the Centralized Partnership Audit Regime, the adjustments are calculated and pushed out to individual partners, including those living in Australia.
The mechanics of these adjustments differ from anything administered by the Australian Taxation Office. While ATO assessments follow the rules in Part 4-15 of the Income Tax Assessment Act 1997 and typically allow a four-year amendment window for individuals, the IRS partnership regime requires faster action. A taxpayer who misses the response window can lose the right to challenge the deficiency in the US Tax Court.
Pridgeon & Zoss, PLLC works with Australians and their local advisers who encounter these notices. The firm collaborates with Australian accountants, tax agents, and family-office teams in cities like Sydney and Melbourne to bridge the procedural gap between ATO reporting habits and US tax litigation timelines.
What a Notice of Deficiency Actually Means
A Notice of Deficiency is a formal IRS determination that a taxpayer owes additional federal tax, interest, and often penalties. It is issued under Section 6212 of the Internal Revenue Code and gives the recipient 90 days to file a petition with the US Tax Court. If the taxpayer does nothing, the IRS can assess the tax and begin collection, including by levying US-source bank accounts or pursuing partnership distributions held for the partner.
For a large partnership, the deficiency may reflect adjustments to ordinary income, capital accounts, or the allocation of items among partners. The IRS may have recharacterised certain transactions, disallowed deductions, or increased the share of taxable income flowing to a particular partner. Each line item creates downstream consequences, and the partner living overseas is often the last person to learn about the change.
Many Australians first hear about the problem when their US accountant forwards a scanned copy of the notice. Because international mail from the IRS can take weeks to reach a Sydney address, the effective response window is sometimes shorter than the statutory 90 days. Legal counsel familiar with both the partnership audit regime and cross-border service can help preserve rights before the deadline closes.
How Large Partnership Adjustments Reach the Audit Stage
Under the Centralized Partnership Audit Regime that took effect for partnership tax years beginning after 31 December 2017, the IRS examines the partnership itself rather than each partner individually. The partnership representative, not the individual partners, is the IRS's primary point of contact. This structure can be unsettling for an Australian partner who never met the representative and had no role in choosing one.
Once the exam concludes, the IRS issues a Notice of Proposed Partnership Adjustment, sometimes called a NOPPA or FPAA. The partnership representative then has a limited time to challenge the proposed changes or accept them and have the adjustment "pushed out" to the partners for the year under examination. For Australian partners, push-out means a US Schedule K-1 arrives with revised numbers that may not match the original expectation reported to the ATO.
The push-out mechanism also affects Australian tax positions. A partner who claimed a foreign tax credit on the ATO return based on the original K-1 may need to amend that return once the new figures arrive. Coordination between a US tax attorney and an Australian tax agent is therefore essential from the outset, particularly for those filing through Sydney or Melbourne-based practices that specialise in US expatriate work.
The 90-Day Window and Why It Matters in Practice
The 90-day clock is unforgiving. Unlike many ATO disputes, which can stretch across years of objection and review, a US Tax Court petition must be filed on a specific form, with a specific filing fee, in a specific court. Missing the deadline generally means the deficiency becomes final and unchallengeable, even if the underlying IRS position is wrong.
An Australian partner who is overseas when the notice arrives should arrange for someone in the United States to receive correspondence promptly. The IRS will send the notice to the address on the most recent partnership return, and that address may be a Minnesota PO box, a former rental in Minneapolis, or an old adviser's office in St. Paul. Once a forwarding address is confirmed, a tax attorney can prepare a petition that frames the issues, identifies the adjustments in dispute, and preserves the right to litigate.
Working with a Minnesota-Based Tax Attorney from Australia
Distance is no longer the obstacle it once was. Modern secure portals, e-signature platforms, and video conferencing allow a Minnesota firm to work alongside an Australian partner as though everyone sat in the same boardroom. The day-to-day habits of Australian professionals, who often start their morning in Sydney or Melbourne before US business hours, can actually help. Many cross-border tax lawyers find that scheduling a video call at 7am Australian Eastern time aligns with a late afternoon slot in the Twin Cities.
Pridgeon & Zoss, PLLC regularly coordinates with Australian accountants who handle BAS statements, capital gains events, and Division 293 superannuation contributions while the firm handles IRS procedural filings. The collaboration matters because statements made to the ATO can affect US positions and vice versa, especially under the United States–Australia Income Tax Treaty, which both countries signed in 1982 and have updated several times since.
When the matter escalates beyond a routine deficiency, the role of a criminal tax attorney becomes central, and early legal guidance can prevent a civil partnership adjustment from drifting into a criminal referral. The earlier an attorney reviews the underlying facts, the more options remain on the table.
Defending Against the Adjustment: Strategies and Appeals
Defence begins with the partnership representative. A skilled representative can negotiate a settlement at the partnership level that reduces the push-out amount flowing to all partners, including those in Australia. Where settlement fails, the partnership itself can petition the Tax Court within 90 days of the FPAA, and individual partners may then have a shorter, 60-day window to opt out and pursue their own cases.
For partners who want to keep litigation away from the partnership, a request for a separate notice under the push-out procedure allows them to challenge the imputed adjustment directly. This route requires careful attention to statute and procedure, but it preserves arguments that would otherwise be lost if the partnership representative settles. Australian partners sometimes prefer this path because it gives them control over the dispute rather than leaving outcomes in the hands of a representative they did not choose.
Documentation is critical. Bank records, partnership agreements, capital contribution schedules, and email exchanges with general partners all become evidence. An Australian partner who has been keeping clean records in line with normal ATO substantiation habits often has a head start, since the documentation standards in Australia for tax deductibility are similarly rigorous.
Resolving the Resulting Tax Debt
If the deficiency becomes final, either through Tax Court litigation or because the 90-day window closed without action, the IRS will assess the tax and begin collection. Australian partners sometimes discover that US collection can reach assets held in the United States, including Minnesota rental property, brokerage accounts, and distributions from the partnership itself.
Resolution options include an installment agreement, an offer in compromise, or, in narrow circumstances, innocent spouse relief. Partners with prior-year balances may consider requesting an installment agreement to consolidate older debts with the new deficiency and create a single predictable monthly payment.
The IRS will also consider collection alternatives based on the taxpayer's overall financial picture, including assets held in Australia. While US collection powers stop at the border, the existence of overseas wealth affects the agency's view of what the taxpayer can pay.
Comparing IRS and ATO Approaches to Partnership Adjustments
The structural differences between the two systems shape how an Australian partner should respond. In Australia, the ATO typically examines the entity or individual directly, and partnerships are taxed under flow-through rules that mirror the US approach in many respects but with different procedural protections. Understanding both frameworks is essential for anyone whose tax life crosses the Pacific.
Practitioners who handle both jurisdictions often describe the US approach as faster and more adversarial at the outset, while the ATO process is generally slower but offers more negotiation points along the way. The summary below sets out the most significant contrasts at a glance.
| Issue | IRS approach | ATO approach |
|---|---|---|
| Primary unit examined | Partnership under centralised regime | Entity or individual, depending on structure |
| Response window to challenge | 90 days to Tax Court | Generally 4 years for individuals, longer for some entities |
| Forum for dispute | US Tax Court | Administrative Appeals Tribunal, then Federal Court |
| Cross-border treaty | US–Australia Income Tax Treaty 1982 | Same treaty applied from Australian side |
| Collection reach | Worldwide US-source assets | Worldwide assets of Australian taxpayer |
If a Notice of Deficiency tied to a large Minnesota partnership adjustment has landed in an Australian mailbox, time is the most important resource. Contact Pridgeon & Zoss, PLLC today to schedule a confidential cross-border review before the 90-day clock runs out.