Should I buy now with a 5% deposit or wait to save 10%?

For most first-time buyers choosing between the two, buying now works out cheaper in cash terms once rent and price growth over the waiting period are counted. On a typical £226,600 Manchester first-time buyer purchase (Zoopla, 9 July 2026), buying today with a 5% deposit costs £417 less over 24 months than renting for a year and buying with a 10% deposit at the new, higher price (calculated using the standard UK repayment mortgage formula). The bigger deposit does get you a cheaper rate, Halifax's 90% loan-to-value deal at 4.51% beats HSBC's 95% loan-to-value rate of 4.84% (both July 2026), but that saving arrives too late to offset a full year of rent paid on top of a higher purchase price. If you can already comfortably afford the 5% deposit deal's monthly payment, the numbers say go now rather than wait.

How much more does a 5% deposit mortgage cost each month than a 10% deposit one?

On the same £226,600 property, a 95% loan-to-value mortgage at HSBC's 4.84% rate costs £1,238 a month over a 25-year term. A 90% loan-to-value deal at Halifax's 4.51% costs £1,160 a month once the bigger deposit target is met (calculated using the standard UK repayment mortgage formula, rates per Moneyfacts and HomeOwners Alliance, July 2026). That's a real £78-a-month gap, and it isn't nothing over a 25-year term. But reaching the bigger deposit in this example means saving roughly £986 a month for a year on top of rent, which isn't realistic for most first-time buyers on an average regional salary. Unless you already have most of that extra deposit sitting in savings, the smaller monthly saving usually isn't worth chasing.

Will Manchester house prices keep rising faster than I can save?

Nationally, prices are not currently outpacing wages. Nationwide's House Price Index rose 2.2% annually in June 2026, while ONS figures show average regular pay growing 3.4% in the year to April 2026 (Nationwide HPI, June 2026; ONS Average Weekly Earnings, released June 2026). That's a genuinely encouraging trend if you're saving a deposit from scratch. It doesn't mean waiting is free, though: a 2.2% annual rise on a £226,600 property still adds close to £5,000 to the purchase price over a year, money a bigger deposit and cheaper rate only partly claw back, as the calculation above shows. Treat the narrowing affordability gap as a reason to keep saving steadily rather than a reason to delay a purchase you can already afford.

What if my rent is currently cheaper than a mortgage payment would be?

Compare the actual figures rather than assuming, because the gap has narrowed sharply this year. Manchester's average rent is £1,352 a month (ONS Private Rental Market Statistics, May 2026), against a £1,238 monthly payment on a 95% loan-to-value mortgage on the average first-time buyer property (calculated using the standard UK repayment mortgage formula, HSBC rate, July 2026). In this example, buying is already £114 a month cheaper than renting before any equity is even considered, which is the opposite of the assumption a lot of tenants are still working from. If your own numbers show renting is genuinely cheaper by a meaningful margin, that changes the calculation, but check your specific rent against a real mortgage quote before deciding to wait on that basis alone.

Buy now or wait a year? Manchester's answer costs £417

You've finally scraped together a 5% deposit, and now the doubt creeps in: wait another year, save a bit more, and maybe land a better rate instead. It feels like the cautious thing to do. The mortgage calculator has been open in a browser tab for weeks, but you still haven't clicked through to a decision in principle, because what if patience actually pays?

Here's the number that should settle it. Waiting twelve months to build a 10% deposit costs a typical Manchester first-time buyer £417 more in total cash outlay than buying now with a 5% deposit, and it hands over a full year of homeownership for nothing in return (calculated using the standard UK repayment mortgage formula, full workings below).

What a bigger deposit actually buys you

A 10% deposit does unlock a genuinely cheaper mortgage rate, so the instinct to wait isn't irrational. On Manchester's average first-time buyer purchase price of £226,600 (Zoopla, 9 July 2026), a 5% deposit is £11,330, leaving a £215,270 loan. At HSBC's current 95% loan-to-value rate of 4.84% (fee-free, with £250 cashback, July 2026), that mortgage costs £1,238 a month over a 25-year term.

Move to a 10% deposit and Halifax's 90% loan-to-value deal at 4.51% (HomeOwners Alliance, 12 July 2026) becomes available, a real 33 basis point improvement. But getting there from a standing start of 5% means finding another £11,829 within twelve months on this specific property, once the deposit target itself has grown alongside the price. That works out at roughly £986 a month in extra saving, on top of whatever rent you're already paying. It's worth remembering deposit size cuts both ways: our look at the no-deposit mortgage myth found the opposite extreme, a 0% deposit route, costs even more than renting on a comparable purchase.

So if closing that gap means putting aside a sum close to a month's take-home pay every single month for a year, on top of rent, the cheaper rate isn't the free upgrade it looks like on paper.

Could a Lifetime ISA close the gap faster?

A Lifetime ISA is the obvious tool to reach for here, and it does help, just not as much as the headline numbers suggest. The scheme lets you save up to £4,000 a year and adds a 25% government bonus on top, worth up to £1,000 a year, for use on a first property costing up to £450,000 (GOV.UK, current LISA rules), which comfortably covers Manchester's £226,600 average first-time buyer price. Save the full annual allowance for a year and you'd have £5,000 towards the extra deposit, contribution plus bonus combined.

Set that against the £11,829 shortfall between a 5% and a 10% deposit on this example, and a maxed-out LISA still leaves £6,829 to find from other savings, on top of the rent you're paying while you wait. The bonus is real money, and worth using if you're saving towards a deposit regardless of timing, but it isn't fast enough on its own to make the wait-a-year plan pay for itself against a property whose price and deposit target are both moving upward at the same time.

So a LISA is worth maxing out whichever path you take, but treat it as a discount on the extra saving required, not a shortcut that changes today's answer.

What that year of waiting actually costs

Two things move against you while you save. First, the property itself gets more expensive: Nationwide's House Price Index shows UK prices rising 2.2% annually as of June 2026, and applied to a £226,600 starting point that pushes the price to roughly £231,585 a year later (Nationwide HPI, June 2026). Your 10% deposit target grows to £23,159, not the £22,660 you might have budgeted for at today's price.

Second, you're paying rent the entire time with nothing to show for it afterwards. Manchester's average private rent is £1,352 a month (ONS Private Rental Market Statistics, May 2026), which comes to £16,224 over a year, money that would have been going towards a mortgage and building equity if you'd bought straight away.

So the "wait and save more" plan only works if the rate improvement you're chasing is bigger than the rent you'll pay and the price growth you'll absorb in the meantime, and on these numbers, it isn't.

The 24-month verdict

Run both paths over the same two-year window and the gap is clear. Buying now at 95% loan-to-value costs £1,238 a month for 24 months, a total of £29,723. Waiting a year means paying £16,224 in rent, then a £1,160 monthly mortgage payment on the higher-priced, better-rate deal for the second year, £13,916, a combined total of £30,140 (calculated using the standard UK repayment mortgage formula).

That's £417 more for the waiting path, and it only buys twelve months of ownership instead of twenty-four. Because £226,600 sits comfortably under the £300,000 first-time buyer stamp duty nil-rate threshold, this particular comparison doesn't carry a tax angle either way; both paths stay stamp duty free, unlike the sharp North-South divide our stamp duty postcode divide piece found elsewhere in the country.

The maths, in one place (25-year repayment term, Manchester average first-time buyer price £226,600):

Buy now, 5% deposit: loan £215,270 at 4.84% (HSBC, 95% LTV) = £1,238.46/month. Wait 12 months, price rises 2.2% to £231,585, 10% deposit: loan £208,427 at 4.51% (Halifax, 90% LTV) = £1,159.69/month. 24-month cash total: buy now £29,723 vs wait-then-buy £30,140 (12 months' rent at £1,352/month plus 12 months' mortgage). Waiting costs £417 more and delivers half the ownership time. A maxed-out Lifetime ISA (£4,000 contribution plus £1,000 bonus) covers £5,000 of the extra £11,829 deposit required to wait, leaving £6,829 still to find. Sources: Moneyfacts, HomeOwners Alliance, Zoopla, ONS, Nationwide HPI, GOV.UK, July 2026.

So on a property at this price point, the trade-off is cash flow and time, not tax, and the cash flow favours buying now.

What this means for you

The maths points toward buying now if you're already sitting on a usable 5% deposit and the mortgage is affordable against your income today. Waiting a year to reach 10% costs more overall on this example, not less, once rent and price growth are counted, and it delays the point where your money starts building equity instead of disappearing into a landlord's account. Frankly, if you're the kind of saver who could genuinely put aside close to £1,000 a month extra without giving something else up, you were probably already close enough to 10% that this decision wouldn't be this tight in the first place. Most people who run these numbers properly end up buying as soon as they can comfortably afford the payment, rather than chasing a rate improvement that costs more to reach than it saves. The exception is if your local market or specific property is rising unusually fast, or your current rent is genuinely far below any mortgage payment you'd take on, in which case the calculation shifts and it's worth checking your own numbers rather than assuming this example applies directly to you. Run your own figures against your actual rent and savings rate using our rent vs buy calculator before you commit either way, and if you do buy now, deciding whether to fix for 2 or 5 years is the next decision worth running the maths on.