First Home Buyer Calculator

First-time buyer advantages vary by market

First-time buyers can often access genuine financial advantages, but the specifics differ sharply by country and change over time. Common types include government-backed savings bonuses, reduced or waived property transfer taxes up to a threshold, and first-buyer mortgage products with lower deposit requirements or competitive rates. The calculator above handles the universal purchase math; the notes below describe the kinds of help worth checking for in your own market.

Government savings bonuses

Some governments top up money saved toward a first home, for example by adding a percentage bonus to each contribution up to an annual cap. Where such a scheme exists, the bonus compounds alongside interest and can add a meaningful amount to a deposit over several years. The bonus rate, caps, eligibility ages, and property-price limits attached to these schemes vary widely and are revised periodically, so the current local rules are what matter. Many schemes also restrict withdrawals to a qualifying home purchase, with a penalty otherwise.

Transfer taxes

Buying property usually triggers a transfer tax paid to government, and many jurisdictions reduce or waive it for first-time buyers up to a price threshold. The thresholds, rates, and bands differ by country, and sometimes by region within a country, and are adjusted over time. The relief can be worth several thousand in local currency on a typical first purchase, so it is worth confirming the current rules where the property sits.

Deposit levels and market access

5% is the minimum deposit. 10% typically makes more products available at meaningfully better rates. 15–20% opens most of the market at competitive rates. For a 300,000 property: 5% = 15,000, 10% = 30,000, 15% = 45,000, 20% = 60,000. The difference between 5% and 20% is 45,000 — and the lifetime interest on lower-LTV rates typically runs 20,000–40,000 over a 25–30 year mortgage. Waiting 18 extra months to reach 10% can align with long-term cost outcomes, depending on local price trends and personal circumstances.

Income and borrowing capacity

Lenders typically cap borrowing as a multiple of gross income, commonly somewhere around 4 to 4.5 times in many markets, though the exact multiple varies by country, lender, and circumstances. On that basis a single income of 35,000 might support roughly 140,000-157,500 of borrowing, and a combined 60,000 around 240,000-270,000. Where typical first-home prices exceed local borrowing capacity, options include buying with a partner, family assistance, or looking at lower-cost areas. Borrowing at the absolute maximum can create affordability pressure if circumstances change.

Shared-equity scheme option

A shared-equity scheme — buying a percentage of a property (typically 25–75%) and paying rent on the remaining portion — expands the accessible property pool. A 400,000 property bought as 50% shared-equity: 200,000 mortgage (on the part owned) plus rent on the other half (typically 2.75% of the unowned portion annually, approximately 5,500 a year or 460/month). Total monthly cost often compares to purchasing outright but requires a smaller deposit. Trade-offs include: harder resale (smaller buyer pool, permission requirements), annual rent increases, and partial property appreciation. Useful for buyers who cannot otherwise purchase in their area; may not be optimal if full purchase were feasible.

Family-assisted mortgages

Some lenders offer family-linked or guarantor mortgages, where a relative's savings act as security without being given away. The savings are typically returned after a few years if payments stay current. This can let a first-time buyer borrow a high share of the price without the rates of a standard high-LTV mortgage, but it requires a relative willing to tie up savings for the period. Availability and terms vary by lender and country.

Ongoing costs in year one

Beyond deposit and mortgage, the first year of ownership typically costs 5,000–15,000 more than anticipated. Buildings insurance (200–500). Local property tax (1,500–3,000 annually). Initial furnishings if moving from furnished rental (2,000–10,000). Necessary replacements like boiler or kitchen (often 3,000–8,000 in year one or two). Maintenance and emergency repairs. A common oversight is buying the right property without a cash reserve for these operating costs. Setting aside roughly 1% of the property value a year for maintenance, weighted toward the first year, helps cover this gap.

Rent longer or buy now

For most first-time buyers, the central decision is: rent longer while saving, or buy now at a lower LTV. A common heuristic suggests each 5% of additional deposit corresponds with roughly 6–12 months of waiting, as interest savings on lower LTV rates tend to exceed rental costs and opportunity cost. This pattern may not hold in rapidly-rising markets where prices outrun savings. In stable or declining markets, buyers with larger deposits accumulated over time often experience better long-term outcomes than buyers with minimum deposits. The calculator above helps run the analysis that fits your situation.

What the calculator does not include

Government savings bonuses, first-buyer scheme eligibility, shared-equity options, family-assisted mortgages, and location-specific factors all sit outside the arithmetic. Use the calculated timeline as the starting figure; the actual decision weighs these alongside it.