How to Save for a Mortgage Deposit: A Practical Guide

Saving for a mortgage deposit is one of the biggest financial goals most people set themselves. It requires patience, discipline, and a clear plan. This guide walks you through how much you actually need, how long it will realistically take, and the most effective strategies for getting there.

How much deposit do you need?

The minimum deposit required varies by lender and country, but a general guide is:

• 5% deposit — the minimum accepted by most lenders. On a $300,000 home, that's $15,000. However, you'll typically face higher interest rates and may need mortgage insurance.
• 10% deposit — gives you access to better mortgage rates and more lenders.
• 20% deposit — the sweet spot. You avoid mortgage insurance entirely, access the best rates, and have significant equity from day one.

A larger deposit almost always means lower monthly repayments and less total interest paid over the life of the mortgage. It's worth taking extra time to save if it means hitting a higher deposit threshold.

How long will it take to save?

Here's a realistic picture of how long saving a 20% deposit takes at different savings rates, on a $300,000 home (deposit needed: $60,000):

Monthly saving	Time to $60,000	With 4% interest on savings
$500/month	10 years	~8.5 years
$1,000/month	5 years	~4.5 years
$1,500/month	3.3 years	~3.1 years
$2,000/month	2.5 years	~2.4 years

Compound interest on your savings shortens the timeline — which is another reason to start saving as early as possible and choose a high-yield account.

Where to keep your deposit savings

Your deposit money needs to be accessible within a few years, which means investment accounts with high volatility (like stocks) are too risky. Better options include:

• High-yield savings accounts — earn more interest than a standard account while keeping your money liquid
• Fixed-term deposits — lock your money away for a set period at a guaranteed higher rate, if you won't need the money before the term ends
• Government first-home buyer schemes — many countries offer tax-advantaged savings accounts or grants specifically for first home buyers. Check what's available in your region.

Practical strategies to save faster

1. Set a specific target and deadline

Vague intentions don't work. Calculate your exact deposit target, set a realistic date, and work backwards to find your required monthly saving. Make it automatic — set up a direct transfer on payday so the money moves before you can spend it.

2. Audit your current spending

Track every expense for one month. Most people are surprised by what they find — subscriptions they forgot about, regular small purchases that add up, and expenses that could be reduced without much lifestyle impact.

3. Increase your income

Cutting expenses has a floor — you can only reduce spending so far. There's no ceiling on income. A side income of just $300–$500 a month directed entirely toward your deposit can cut years off your timeline.

4. The deposit challenge

Treat every windfall — tax refunds, bonuses, gifts, and any extra income — as a direct contribution to your deposit fund. These lump sums can compress your timeline significantly.

5. Review your rent situation

Rent is typically the largest single expense for people saving for a deposit. If possible, moving somewhere cheaper, sharing with others, or temporarily moving in with family while saving can make a dramatic difference to how quickly you reach your target.

When you're close to your target

Before you start making offers on properties, make sure you've also budgeted for the additional costs of buying a home — conveyancing or legal fees, building inspections, stamp duty (in some regions), moving costs, and immediate repairs or furniture. These can add 2–5% to the total cost of the purchase, so factor them into your savings goal.

Use our mortgage calculator to understand exactly what your monthly repayments will look like at different deposit levels and interest rates, so you can make an informed decision about when you're ready to buy.