Frequently Asked Questions

AutoCalc currently supports 28+ lenders— the major banks, mid-tier and customer-owned banks, and the main non-bank and specialist lenders Australian brokers use every day:

CBA, NAB, ANZ, Westpac, St.George, Bankwest, Macquarie, ING, Suncorp, Bendigo, Bank of Sydney, ME Bank, UBank, Auswide, HSBC, Bank of Melbourne, BankSA, Teachers Mutual, MyState, Great Southern Bank, AMP, Pepper Money, Resimac, Bluestone, Brighten, MA Money, La Trobe, Liberty. †

We focus on getting each lender right rather than racking up a count. These cover the lenders behind much of Australian mortgage settlement volume — the major banks and their brands plus the main non-bank and specialist lenders. For most scenarios we test, the figures are designed to match the bank's own calculator closely rather than being a rough estimate, though you should always verify against the lender's own tool before relying on a result. We'd rather give you lenders you can rely on than a longer list of approximations.

New lenders are added regularly. If one you use isn't on the list yet, let us know — broker demand is how we prioritise the next lender to onboard.

Each lender's calculator is built to independently reproduce the results of that bank's own serviceability assessment — the income shading rates, assessment buffers, living-expense (HEM) rules, and negative-gearing treatment are implemented from the lender's published rules rather than being approximated.

Every calculator is cross-checked against the bank's actual spreadsheet (or live calculator) using thousands of automated test cases, so that a max-borrow or UMI figure in AutoCalc is designed to line up with what you would get filling in the lender's own tool by hand.

For most scenarios we test, our figures match the lender's own Excel calculator very closely — often to the dollar. We can't guarantee an exact match in every case, so don't take our word for it: download the prefilled Excel from AutoCalc and compare it against the bank's spreadsheet side by side.

AutoCalc is a fast first-pass guide, not financial, credit, or other professional advice. The figures are informational only. Final serviceability always rests with the lender's own assessment, and lender policies and calculators change — we work to keep the calculators current, but you remain responsible for verifying results and exercising your own professional judgement before relying on them.

There are a lot of conflicting policy notes floating around the industry — internal cheat-sheets, old screenshots, and second-hand summaries that are often stale or no longer relevant. To cut through that, we implement each lender's published serviceability rules ourselves, and rank the sources we rely on by how authoritative they are, always deferring to the highest-ranked one available:

1. The lender's own serviceability calculator — the bank's official tool, which we use as the benchmark to validate our independent implementation against.
2. The bank's official policy documents — published credit and serviceability guides.
3. BDM-communicated emails and documents — written confirmation direct from the lender's business development manager.
4. Other trusted resources — reputable industry references, used only where nothing higher is available.

When sources disagree, the higher-ranked one wins — so where our figures differ from the lender's own calculator, we treat the lender's calculator as correct and adjust ours to match.

No. Every borrowing-capacity number — max loan, UMI, assessment rate, shading — is produced by our own deterministic code, written independently to apply each lender's published serviceability logic. There is no language model anywhere in the calculation path.

The only place AutoCalc uses a model is the optional payslip reader, which turns a PDF into structured fields you review before anything is calculated. More detail is on the Trust & Security page.

No. Payslip files are never written to disk or any database — the bytes are sent to our document-parsing service and discarded. You can also redact a payslip in your own browser before it ever leaves your computer. Full details, including how to verify this for yourself, are on the Trust & Security page.

Yes. AutoCalc automates a step accredited brokers already do by hand. For supported lenders, it takes the figures you entered and fills them into the lender's serviceability calculator — the same template brokers use — so you can review and verify the numbers in the format you already work with, without re-keying.

This feature is available only to licensed or authorised brokers. You remain responsible for ensuring your access to, and use of, each lender's calculator and materials complies with that lender's own terms.

Create a free account and open the calculator. You can compare lenders right away — see the pricing section for what's included on each plan.