What Self‑Employed Borrowers Really Pay On Low‑Doc vs Full‑Doc Loans

If you’re self‑employed in Australia, the same home can cost you very different amounts depending on whether you qualify for a full‑doc, alt‑doc or true low‑doc loan.

In practical terms, self‑employed borrowers usually pay a clear risk premium for low‑doc and alt‑doc loans – higher interest rates, higher fees, tighter LVRs. Over 25–30 years, that can add up to six figures in extra interest.

This guide unpacks what you really pay, with realistic ranges, worked examples, and a simple process to decide which option makes sense for you this week.

1. Quick answer: how much more do low‑doc and alt‑doc really cost?

Indicative rate and fee gaps in today’s market

Exact rates change constantly and vary by lender, but for owner‑occupier P&I loans with good credit:

• Full‑doc (self‑employed, strong files)
  → Often in line with mainstream sharp rates, say ~5.7–6.2% p.a. (illustrative only).

• Alt‑doc (BAS, accountant letter, bank statements)
  → Typically ~0.7–1.5% p.a. higher than sharp full‑doc options.

• True low‑doc / specialist non‑conforming
  → Commonly ~1.5–3.0% p.a. higher than sharp full‑doc, sometimes more.

Fees are also higher for non‑standard loans:

• Application / risk fees can be $800–$3,000+.
• Some lenders charge a rate‑loading instead of a fee.
• Higher LMI or risk fees kick in at lower LVRs.

Rule of thumb: If you can qualify for a clean full‑doc loan within 3–9 months, it’s often worth fixing your paperwork rather than locking in long‑term higher rates on a low‑doc facility.

We’ll now unpack the moving parts so you can price your options properly.

2. Key definitions: full‑doc, alt‑doc and low‑doc for self‑employed borrowers

2.1 Full‑doc loans

Full‑doc means you meet standard verification rules:

• 2 years’ personal and business tax returns.
• 2 years’ notices of assessment (NOAs).
• Sometimes financial statements (P&L, balance sheet) and ATO portals.

If your numbers are clean, this usually gives you:

• Best‑in‑market rates.
• Widest lender choice.
• Normal LVR/LMI rules (e.g. up to 80% LVR without LMI, up to 95% with LMI for strong cases).

For context on choosing documentation types, see /insights/choosing-full-doc-alt-doc-low-doc-alexandria-self-employed.

2.2 Alt‑doc loans

Alt‑doc (or alternative‑doc) loans still verify income, just not using full tax returns. Common evidence:

• 6–12 months BAS.
• 6–12 months business bank statements.
• An accountant’s income declaration.

They sit between full‑doc and true low‑doc:

• More documentation than low‑doc.
• More flexible than strict tax‑return‑based full‑doc.
• Rate premium over full‑doc, but cheaper than true low‑doc.

2.3 True low‑doc loans

Today, genuine low‑doc is niche, usually via non‑bank or specialist lenders. You may see:

• Short self‑certification or income declaration forms.
• Minimal supporting documents (e.g. ABN, GST registration, a few statements).
• Higher equity required (e.g. 60–70% max LVR).

These are priced like specialist or near‑prime credit: high rates, tighter terms, more fees.

For many clients, as we cover in /insights/refinancing-low-doc-to-full-doc-timeline-traps-tactics, the aim is to use low‑doc briefly, then refinance to full‑doc once your numbers catch up.

3. Why lenders charge more for alt‑doc and low‑doc: the risk premium explained

Lenders price risk, not effort. For self‑employed loans, three things drive the premium:

3.1 Income volatility and uncertainty

Self‑employed income can be:

• Lumpy, seasonal or project‑based.
• Impacted by economic slowdowns faster than PAYG salaries.

Roy Morgan’s 2026 research shows over 32% of owner‑occupier borrowers are ‘At Risk’ of mortgage stress, with higher stress among those reliant on variable or self‑employed income.

Lenders respond by:

• Loading assessment rates (APRA also insists on a 3% serviceability buffer).
• Capping income at conservative levels.
• Charging higher margins when they can’t see full tax data.

3.2 Documentation quality

Less paperwork = more uncertainty about your true income and tax position.

• Full‑doc: tax returns and NOAs, cross‑checked to the dollar.
• Alt‑doc: partial verification (BAS, bank statements, accountant letters).
• Low‑doc: the lender mostly relies on your declaration plus basic checks.

The less reliable the picture, the more they price for default risk and regulatory capital.

3.3 Capital and funding costs

Specialist and non‑bank lenders often:

• Rely more on securitisation / wholesale funding.
• Hold more capital against higher‑risk loans.
• Have higher loss expectations.

Those costs are built into your interest margin and fees.

4. Realistic rate bands: full‑doc vs alt‑doc vs low‑doc (illustrative)

Rates change monthly, but the spreads between loan types move more slowly.

Below are indicative owner‑occupier P&I ranges for a solid‑credit self‑employed borrower with 80% LVR or less, as of a high‑rate environment (RBA cash rate ~4.35%). These are not live offers, just realistic ballparks.

4.1 Indicative rate comparison table

*Illustrative only. Actual pricing depends on lender, product, purpose, LVR and credit.

4.2 How that changes repayments: $800k example

Assume:

• Loan: $800,000
• Term: 30 years
• Principal & interest (P&I)

Impact:

• Alt‑doc costs roughly $4,700 more per year than full‑doc on $800k.
• Low‑doc costs roughly $15,000 more per year than full‑doc.

Over 5 years, even before compounding, that’s $23k vs $75k+ in extra cash out the door.

5. Fees and charges: where low‑doc borrowers often get stung

Interest isn’t the only cost. The fee profile can look very different.

5.1 Typical fee types

For all loan types you may see:

• Application / establishment fee.
• Valuation fee (sometimes bundled).
• Settlement / legal fee.
• Ongoing package fee.
• Discharge / early termination fees.

Low‑doc and specialist products can add:

• Risk fee or mortgage management fee (especially at higher LVRs).
• Higher LMI premiums or proprietary risk fees.
• Rate‑for‑risk tiers (better or worse pricing depending on your profile).

5.2 Fee comparison table (illustrative)

5.3 Worked example: 5‑year cost comparison on $800k

Assume 80% LVR, no LMI, and you refinance or restructure after 5 years.

• Full‑doc prime

  • Rate: 5.9%
  • Upfront + annual fees over 5 yrs: say $1,800 total.
  • Approx interest over 5 yrs: ~$225,000 (illustrative).
  • Total 5‑yr cost: ~$226,800.

• Alt‑doc near‑prime

  • Rate: 6.7%
  • Fees: say $3,000 (higher application, similar annual).
  • Approx interest over 5 yrs: ~$255,000.
  • Total 5‑yr cost: ~$258,000.

• Low‑doc specialist

  • Rate: 8.2%
  • Fees: say $5,000 (higher establishment + risk fee).
  • Approx interest over 5 yrs: ~$312,000.
  • Total 5‑yr cost: ~$317,000.

Difference vs full‑doc over 5 years:

• Alt‑doc: ~$31,000 extra.
• Low‑doc: ~$90,000 extra.

This is why timing your move, as discussed in /insights/when-how-upgrade-alt-doc-to-full-doc-without-hurting-cashflow, can be worth a lot of money.

6. How lenders decide your rate: the main levers

6.1 LVR and security type

Higher LVR = more risk = higher pricing.

• ≤60% LVR: Often sharpest pricing.
• 60–80% LVR: Standard owner‑occupier bracket.
• >80% LVR: LMI or risk fees, fewer lenders.

For self‑employed borrowers, some alt‑doc and low‑doc lenders will only go to 60–70% LVR if your scenario is borderline.

6.2 Credit history and conduct

Things that can push you into higher‑rate tiers:

• Recent arrears on existing loans or credit cards.
• Defaults, judgments or serious late ATO debts.
• Overdrawn business accounts.

Cleaning up these issues first can be more cost‑effective than paying a steep specialist margin.

6.3 Income profile and loan purpose

• Owner‑occupier loans with P&I generally get better pricing than investment or interest‑only structures.
• Highly variable income or multiple entities can nudge you from full‑doc to alt‑doc, changing both rate and fees.

If your accounts are messy, /insights/self-employed-eastern-suburbs-chaotic-accounts-to-bank-ready and /insights/bookkeeping-cleanup-plan-before-low-doc-loan show how much improvement you can make in a week.

6.4 Product features

Extra features can trade off against raw rate:

• 100% offset vs redraw only.
• Fixed vs variable or split loans.
• Packaging with credit cards or fee waivers.

Sometimes a slightly higher rate with the right structure (e.g. offset that actually holds your 6–12 month buffer) is safer than chasing the absolute lowest headline rate.