How many months of bank statements do you need for a mortgage?

You’ve been asked for bank statements, but it isn’t clear which accounts or how far back to go. I’d start with 3 months for your everyday and savings accounts, then check whether the lender needs more for your deposit or an existing loan.

Keep your loan and credit card statements handy too. The final list depends on what the lender needs to check and what it can already see in its records or your credit report. We’ll give you one checklist for your application.

The period needed for one purpose may not be enough for another. A statement showing your current balance doesn't establish how the deposit was accumulated, and salary credits alone may not verify all the income you want the lender to use.

I look for regular income, loan repayments and expenses that are easy to miss in a monthly budget. Annual insurance, school costs and subscriptions can all change how much you have left for a mortgage.

Lenders compare living expenses with their assessment requirements, including benchmarks such as the Household Expenditure Measure. That doesn't mean every takeaway purchase causes a problem. The issue is whether the overall budget and commitments support the proposed loan.

ASIC's responsible lending guidance explains the need for inquiries and verification. Tell us about any unusual transactions so we can explain them accurately rather than leave the bank guessing.

A lender needs to understand the debt being refinanced and how it has been managed. The lender may be able to verify that history from your credit report if it can match the account and find all the information it needs.

If the credit report is missing an account or part of its repayment history, the lender may ask for statements to fill the gap. Our refinancing guide explains the other checks involved in switching loans.

For an open account, Westpac allows a statement to be up to 2 months old when it starts reviewing your application. Closed accounts have no maximum statement age under that rule. The documents still need to cover the history required for your application. I’d check which records we need before you spend time downloading them.

Having a deposit available is one step. Some loans also require evidence that you've saved or contributed a minimum amount over time. The test depends on the lender, how much you're borrowing against the property and whether you're using a government guarantee.

If you’ve been paying rent regularly, send us your rental ledger along with your savings balance. I’d check how much of that history the lender can count before you spend another few months saving. A gift towards your deposit also needs the right paperwork before we submit your application.

Our deposit guide explains how the source of your funds fits into the purchase budget.

Variable income may need a longer history or different documents than a straightforward base salary. Lenders may ask for year to date payslips, income statements, employment evidence or additional account history.

For a business owner, paying yourself a regular wage doesn't necessarily mean the bank can assess you exactly like an unrelated employee. The lender may still need to understand the business and its ability to support that income.

Keep the supporting records together and tell us about recent changes in hours, jobs or business structure. Relevant industry experience may help with some options, so a short time in the current role isn't automatically the end of the discussion.

Tell us what has changed and which records are ready. Some lenders can assess self employed income using alternative documents, but the combination depends on the loan and your business history.

We can identify which documents the lender can use before you spend time preparing extras. Our self employed home loan guide explains the income options and why a regular wage from your own business still needs a closer look.

There are loan options that can consider eligible benefit or child support income alongside other accepted income. The evidence, payment history and expected duration matter, and not every payment is accepted.

Bring current entitlement or agreement documents and the account history showing the payments arriving. Tell us the children's ages and any expected change in payments. Our single mother home loan guide explains the wider buying options without assuming every lender uses the income in the same way.

Tell us about every open credit account, even if you owe nothing on it. An unused card limit can still reduce how much the lender will let you borrow.

Before closing an account, ask us whether it would help your application. If you close it, keep the confirmation so we can provide it to the lender.

Don't move spending to another account to keep it out of view. A complete explanation is more useful than an incomplete statement history, especially where a payment relates to a debt or recurring commitment.

List each debt's account details, balance, credit limit and regular repayment. Keep the statements showing how it has been managed and request a current payout figure when your broker or solicitor needs it.

Interest and fees can make the amount needed to close the account different from the last statement balance.

Decide which accounts are to be closed and keep the closure evidence.

Moving a car loan or card balance into a mortgage can lower the monthly payment while increasing the total interest if you repay it over many more years. Our debt consolidation guide explains how to compare the repayment period as well as the rate.

A cropped screenshot may leave out the account name or dates the lender needs. Start with the checklist below. If you’re asked to authorise digital access to account data, check the service and what you’re agreeing to share. Never email banking passwords or security codes.

Keep repayments up to date, correct errors in your records and explain unusual costs. If a missed payment occurred, tell us when, why and whether it has been resolved; the lender's response depends on the circumstances.

For example, a large transfer between your own accounts can be explained by the matching entry on the other account. If an employer repaid a work expense, the expense claim and reimbursement record help explain the debit and credit. Keep the records that show what happened, rather than asking the lender to infer it from a short transaction description.

Update your budget for costs that will continue after purchase, including annual bills. A short period of unusually low spending isn't a substitute for an affordable ongoing plan.