How to Finance an Investment Property Without Tax Returns Using Alt-Doc Lending

Borrowing conditions for self‑employed Australians deteriorated sharply through 2024, not because their businesses weakened but because the standard credit rulebook tightened around them. The Reserve Bank of Australia held the cash rate at 4.35% for a sixth consecutive meeting in February 2025, yet the cost of money is only one part of the equation. APRA’s 3‑percentage‑point serviceability buffer—imposed on lenders—forces them to test a borrower’s capacity to repay at close to 9% p.a. even when the actual interest rate sits near 6.5% p.a. For a sole trader or small‑company director whose taxable income has been minimised through legitimate deductions, two years of tax returns can fail that test dramatically. A business generating $200,000 in gross turnover might show a taxable income of $75,000 after expenses and depreciation, leaving the applicant with a calculation that qualifies for barely two‑thirds of the loan a PAYG earner on the same gross revenue would receive.

At the same time, lenders that operate in the non‑conforming space have adjusted their alt‑doc (alternative documentation) frameworks to capture exactly this cohort. The result is that investment property lending without full tax returns is not merely possible—it is being underwritten at scale by a small group of specialist lenders whose policy books are public. This article maps those pathways with the same precision a credit assessor would apply. It draws on dated primary‑source policy documents from Pepper Money, La Trobe Financial, Liberty Financial, Resimac, Bluestone, and Brighten, and it provides the hard numbers on LVR caps, DTI limits, serviceability buffers, and cost structures that self‑employed borrowers need before approaching a broker.

What Alt‑Doc Lending Means for Investment Property Borrowers

The documentation hierarchy

A full‑doc loan rests on two years of tax returns and notices of assessment; an alt‑doc loan substitutes those with alternative evidence of income deemed reliable by a lender. The hierarchy is tiered:

• BAS‑only: business activity statements (usually six or twelve months) that show gross revenue and GST turnover. The lender applies an income‑recognition ratio—typically 50% to 70% of the gross income declared on the BAS—to estimate the borrower’s profit.
• Accountant‑letter: a declaration from a registered tax agent or CPA confirming the borrower’s income and business viability. Most lenders require the accountant to be a principal of a practice with professional indemnity insurance and to sign under a prescribed verification standard.
• Asset‑backed / equity‑spend: the loan is sized primarily against the value of the security property or another unencumbered asset, with minimal or no income verification. This pathway is effectively an asset‑lend and is typically confined to lower LVRs (50%–60%) unless additional liquidity is evident.

For an investment property, the borrower’s intent adds a layer of scrutiny because the loan will be serviced partly by rental income and partly by the borrower’s existing business cash flow. Lenders therefore want clear evidence that the business can absorb any shortfall between rent and mortgage cost.

Why investment properties are underwritten more conservatively

Alt‑doc policies for owner‑occupied purchases often permit LVRs up to 80% with strong credit. For investment properties, the maximum LVR typically falls 5 to 15 percentage points. The reasoning is regulatory: APRA’s APS 112 requires lenders to hold more capital against investor loans that exhibit higher risk, and alt‑doc loans sit in a higher risk bucket. Consequently, a lender offering 80% LVR on an owner‑occupied alt‑doc loan might cap the same borrower at 70% LVR for an investment purchase. The LVR cap is the single most important number a self‑employed investor must check before comparing rates.

Lender Policy Snapshots: LVR, DTI, and Documentation Requirements

Pepper Money

Pepper’s alt‑doc product for investment lending—available under its “Near Prime” and “Specialist” tiers—is built around BAS‑only and accountant‑letter pathways. As of Pepper’s Alt‑Doc Product Guide v.2024.4 (effective 15 November 2024), the key numbers are:

• Maximum LVR: 75% for investment properties where the applicant provides 12 months of BAS and the accountant‑letter income is within 10% of the BAS‑derived figure. With six months of BAS, the cap drops to 70%.
• Income recognition: For BAS‑only, Pepper applies a 60% gross‑income multiplier to BAS‑declared turnover, then deducts a flat 25% for business expenses before testing serviceability. The accountant‑letter pathway bypasses this haircut if the letter states a final net profit figure.
• DTI limit: Pepper’s total DTI (all debts ÷ all income, calculated on a straight‑line basis) must not exceed 6.5x for investment loans, regardless of LVR.
• Serviceability buffer: Pepper applies the standard 3% APRA buffer but also adds a 0.25% risk margin for alt‑doc investment loans, making the assessment rate 3.25% above the product rate.

A borrower using a Pepper alt‑doc loan for a $500,000 investment purchase would therefore need to show sufficient serviceability at roughly 9.6% p.a. if the actual rate is 6.34% p.a. (Pepper’s indicative rate for a 75% LVR alt‑doc investor loan as at March 2025).

La Trobe Financial

La Trobe occupies a unique space because its credit manual treats the asset as the primary repayment source, not declared income. This “asset‑lend” philosophy is codified in La Trobe’s Credit Policy Manual updated 10 February 2025, specifically clauses 7.2–7.4 for alt‑doc investor loans.

• Maximum LVR: 65% for investment properties where no tax returns are supplied. If the borrower can provide an accountant letter with a minimum annual income of $80,000, the LVR can rise to 70%, provided the total DTI remains below 7.0x.
• Income verification: La Trobe accepts a “declaration of financial position” signed by the borrower and witnessed by a qualified accountant. In practice, the income figure on this declaration is discounted by 20% for servicing purposes.
• Asset test: Where the LVR is ≤ 60%, La Trobe does not apply a DTI ratio at all, relying solely on the exit‑strategy assessment—that is, the property could be sold to repay the debt if necessary.
• Buffer: For investment loans above 60% LVR, the assessment rate is the product rate plus 2.5%, not the full 3% APRA buffer, due to La Trobe’s internal risk‑weighting model approved by APRA under the non‑standard lending carve‑out.

A La Trobe alt‑doc investor loan at 65% LVR on a $650,000 property would require a deposit and costs of $227,500, assuming stamp duty and fees add $25,000. The serviceability test would be performed at roughly 8.5% p.a. on a current variable rate of 6.0% p.a., making it one of the lowest‑buffer options in the market.

Liberty Financial

Liberty’s “FlexiPlus” product is the most visible alt‑doc offering in the mortgage broker channel, and its criteria are directed squarely at self‑employed borrowers who have been trading for a minimum of 12 months. Liberty’s Investment Lending Policy (updated 1 December 2024) covers both BAS‑only and accountant‑letter applications.

• Maximum LVR: 80% for investment purchases with a full accountant’s letter covering 12 months’ income and 12 months of BAS statements. Without the BAS component, the LVR falls to 75%.
• Income recognition: The accountant letter must state “gross business income” and “net profit after tax”. Liberty averages the two most recent accountant letters if the borrower has been trading for more than two years; if not, it uses the most recent letter and applies a 15% haircut for volatility.
• DTI cap: Liberty imposes a hard DTI cap of 8.0x, though only 5% of applications above 7.0x receive approval, according to internal policy guidance observed by brokers.
• Serviceability: Liberty uses a floor rate of 7.25% p.a. plus the 3% APRA buffer for investor loans, producing an assessment rate of 10.25% p.a. This is the highest buffer in the alt‑doc segment and is the primary reason many otherwise qualifying applicants are declined.

A borrower seeking a $500,000 loan for an investment property through Liberty FlexiPlus will be tested at 10.25% p.a., requiring a net‑profit declaration that would service a $10.25,000 annual interest cost on that loan alone, before any other liabilities.

Resimac, Bluestone, and Brighten

These three lenders compete in the specialist alt‑doc space but have smaller policy books. Resimac’s “Specialist Alt‑Doc” product (policy effective 5 March 2025) caps investment LVR at 70% with six months’ BAS and an accountant letter. It applies a 70% gross‑income multiplier to BAS turnover and an 8.0x DTI limit. Bluestone’s “Self‑Employed Loan” (February 2025 update) restricts investment lending to 65% LVR unless the borrower holds a professional accreditation (CPA, CFA, AFSL holder), in which case it goes to 75% LVR with a verified 12‑month income stream. Brighten’s “Alt‑Doc Plus” product (launched 20 January 2025) is unusual because it accepts a statutory declaration of income for borrowers with three or more investment properties, provided the portfolio LVR is below 60% and the total debt is less than $2 million. Brighten charges a 0.40% p.a. premium over its standard variable rate for this feature.

The Documentation Grind: What Actually Passes a Lender’s Test

BAS‑only pathways and the hidden haircut

A borrower handing over six monthly BAS statements (or four quarterly ones) must understand that the lender is not simply multiplying the “Total sales” figure by an acceptance ratio. The policy at Pepper and Resimac, for instance, subtracts GST from the gross turnover and then applies the multiplier, because the BAS includes GST while the income statement does not. A BAS that shows $30,000 in total sales each quarter would first be reduced to $27,272 (dividing by 1.1) to strip the GST, then multiplied by 60% to arrive at $16,363 per quarter, or $65,452 per year as the assessable income. If the same borrower’s accountant letter stated a net profit of $85,000, the lender would use the higher letter figure, provided both documents were consistent. Inconsistencies of more than 25% between BAS‑derived income and accountant letter numbers will almost always trigger a decline.

Accountant‑letter integrity standards

Lenders have tightened the requirements for accountant letters since the Banking Royal Commission, and ASIC’s Report 796 (December 2024) reiterated that licensees must independently verify the accountant’s standing. The letter must be on the firm’s letterhead, dated within 30 days of submission, and include a statement that the accountant has examined the client’s business records and that the income figure is “true and correct to the best of their knowledge”. Several lenders—Liberty and La Trobe in particular—now conduct a follow‑up call to the accountant to confirm the letter’s authenticity and to ensure the accountant is not merely relying on the borrower’s verbal representation. The days of a $250 “accountant‑letter‑shopping” exercise are largely over.

Equity‑based shortcuts

When an existing unencumbered property is available, the alt‑doc question can become irrelevant. A borrower with clear title on a residential property valued at $800,000 can access an equity‑release loan of up to 65% LVR ($520,000) through La Trobe or Bluestone with a 24‑hour turnaround and no income verification beyond a rate‑stamp confirming the borrower is not bankrupt. The rate will be 1.5 to 2.0 percentage points above mainstream investment rates, but the avoidance of serviceability testing makes this the fastest path to purchase. The interest on the equity release can be capitalised into the new investment loan, though this increases the LVR and must stay within the 65% hard cap.

The Hard Math: Serviceability, DTI, and the True Cost

How the buffer interacts with alt‑doc income discounts

Alt‑doc income is already a discounted number. Lenders then apply a 3% (or higher) serviceability buffer on top of the product rate. The effect is that the income a self‑employed borrower must declare is approximately double what a PAYG borrower needs for the same loan amount.

Example: A borrower wants a $400,000 investment loan at 6.50% p.a. The lender’s assessment rate is 9.50% p.a. (6.50% + 3.00%). The annual interest cost for the buffer calculation is $38,000. With an assumed rental income of $24,000 (80% of expected rent), the net cost to service is $14,000 per year. If the lender uses a 60% income multiplier on BAS turnover, the borrower must show gross business turnover of at least $38,888 to cover that $14,000 after the 60% haircut ($38,888 × 0.6 = $23,333, less minimal living expenses). In practice, the borrower’s total debts and living costs will push the required turnover much higher. This is why many alt‑doc borrowers with a moderate BAS cannot qualify even when their actual cash profit is ample.

DTI as the gating factor

DTI caps—usually 6.5x to 8.0x—can be the binding constraint even when serviceability passes. A borrower with a declared income of $100,000 from an accountant letter and a DTI cap of 7.0x can have total debts of $700,000. If they already hold an owner‑occupied loan of $400,000, the maximum investment loan is $300,000, regardless of how much rent the property will generate. Because alt‑doc income is often a fraction of true cash profit, DTI limits hit self‑employed investors hard. The only way to stretch DTI is to use lenders such as La Trobe at ≤60% LVR, where DTI is not applied, or to structure multiple loans across different entities so that each lender sees a cleaner liability profile.

The real cost: rates, LMI, and exit fees

Alt‑doc investment loans carry a premium of 0.50%–2.00% over prime investment rates. In March 2025, a 75% LVR alt‑doc variable rate can be found at 6.35%–6.85% p.a. with Pepper, Liberty, or Brighten, while the equivalent full‑doc rate is around 5.89% p.a. from a major bank. On a $500,000 loan, the difference is roughly $2,300–$4,800 extra interest per year. Lenders’ mortgage insurance (LMI) is nearly always payable once LVR exceeds 60% on alt‑doc, adding $8,000–$15,000 to establishment costs. Break‑costs on fixed‑rate alt‑doc loans can be severe because the underlying funding is non‑standard and less liquid; borrowers should not fix for longer than two years without a clear exit plan.

Operational Traps and Regulatory Boundary Lines

The “refinance out” assumption

Brokers often pitch alt‑doc as a bridge to a full‑doc loan once tax returns improve. In practice, very few self‑employed borrowers reduce their taxable income enough in subsequent years to meet a major bank’s serviceability test, especially with the buffer remaining at 3%. The exit strategy must be a sale, a further asset‑lend, or a decision to remain with the specialist lender indefinitely.

ASIC’s gaze and responsible lending

ASIC’s Review of Low‑Doc Lending (Report 796, December 2024) confirmed that lenders making alt‑doc loans to investment borrowers must satisfy themselves that the loan is “not unsuitable” under the National Consumer Credit Protection Act. This obligation is discharged when a lender verifies the alternative documentation, tests for repayment capacity at a reasonable buffer, and does not rely solely on the value of the security. Alt‑doc loans that are essentially asset‑lends at low LVRs are considered lower risk, but the report warned that lenders using minimalist verification for loans above 70% LVR face an elevated conduct risk. In response, several lenders—most notably Liberty—added the accountant follow‑up call as a control in December 2024.

Mortgage tipping and capital management

A borrower who owns two or more investment properties will often face LVR step‑downs. Each additional alt‑doc investment loan typically reduces the maximum LVR by 5%–10% per property. A portfolio of three, all alt‑doc, might be capped at a blended LVR of 55%–60%. This becomes a capital‑management problem: the equity extraction from the existing portfolio must be plotted before the first alt‑doc application is lodged, otherwise the borrower can end up with insufficient deposit for the next purchase.

What a Self‑Employed Investor Should Do Now

1. Map your documentation before rate‑shopping. The lowest rate in the alt‑doc market is irrelevant if you do not meet the specific BAS count, accountant‑letter timeframe, or DTI limit of that lender. Take your most recent six months of BAS, your accountant’s last two letters, and a current credit report to a broker who can run a black‑and‑white policy match against the lenders listed here.

2. Run the buffer test yourself. Use the lender’s assessment rate (product rate + 3%, or harder for some lenders) against your debts, add a conservative rental income of 75% of the property manager’s estimate, and see what net income you need. Back‑calculate from your BAS or accountant letter to confirm your number sits comfortably above the threshold. If it doesn’t, consider lowering the loan size or increasing the deposit.

3. Treat equity as a separate funding silo. If you own an unencumbered asset, a low‑LVR asset‑lend through La Trobe or Bluestone can fund a property purchase without income scrutiny, albeit at a higher rate. Use this for the first purchase, then build a rental history and refinance into a cheaper alt‑doc or full‑doc loan later.

4. Don’t fix for more than two years. Alt‑doc investment rates may fall relative to prime if more lenders enter the segment, as happened in the UK specialist market. A short fixed period or a variable rate with a strong offset facility preserves options and avoids break‑costs that can exceed $10,000.

5. Document the accountant relationship formally. A letter re‑verification phone call will go smoothly if your accountant has kept a signed engagement letter and working papers showing how the income figure was derived. Ask your accountant to follow the Verification Standard (APES 315) format, which includes a statement of key assumptions, and keep a copy of their professional indemnity certificate. This pre‑emptive step eliminates the most common reason for alt‑doc declines in 2025.