How to Prepare Financially to Buy a House

The short version

1. T-180 days: pull all credit reports, dispute errors, calculate your debt-to-income ratio, set the savings goal (down payment + closing costs + 3 months of reserves).
2. T-120 days: pay high-utilization credit cards below 30%, do not close old accounts or open new ones, build a shortlist of 3 to 5 lenders, research first-time-buyer programs.
3. T-90 days: pre-qualify with your top 3 lenders, compare quotes, interview buyer's agents.
4. T-60 days: gather documents and submit a formal pre-approval application; the letter is valid 60 to 90 days.
5. T-30 days to offer: tour homes, offer with the pre-approval letter attached, keep the inspection contingency.
6. Offer to close: inspection, appraisal, final walkthrough, closing funds by wire, keys.

The 6-month timeline, milestone by milestone

Each milestone exists because something downstream depends on it. Credit changes take months to register; lenders verify two months of bank history; pre-approval letters expire.

• T-180 (six months out): credit audit + savings push. Pull reports from all three bureaus (US: free weekly at annualcreditreport.com; Canada: Equifax and TransUnion directly, both offer free access). Dispute every error in writing; disputes take 30 to 60 days to resolve. Calculate your current debt-to-income ratio and set the full savings target: down payment + closing costs + 3 months of housing reserves.
• T-120 (four months out): debt paydown to lower DTI. Lenders underwrite to roughly a 36% total-debt ratio. Paying a card from 90% utilization down below 30% can move a credit score 20 to 60 points within two statement cycles, and every $100/month of debt payment you eliminate frees roughly $15,000 of mortgage capacity at current rates.
• T-90 (three months out): pre-qualification + lender shopping. Get pre-qualified (soft pull, free) at 3 to 5 lenders: a mix of your own bank, an independent broker, and an online lender is a good spread. Rate quotes can differ by 0.25 to 0.5% between lenders for the same borrower, worth tens of thousands over the loan.
• T-60 (two months out): formal pre-approval. Submit the full documented application to your best one or two lenders. The resulting letter is what sellers want stapled to your offer, and it is valid 60 to 90 days, which is why this step is timed here and not at T-180.
• T-30 to offer day: final document hygiene. No new credit accounts, no large unexplained deposits, no job changes if avoidable. Lenders re-verify before closing.

Print the whole countdown as a fillable worksheet: the Home Buying Readiness Checklist mirrors these phases with checkboxes, a document list, and a neighborhood comparison sheet.

Credit score reality: what the bands actually get

The rate sheet is tiered, and the tiers are expensive. Approximate US picture (Canadian A-lenders behave similarly with a 650 floor and best pricing around 680+):

• Pull reports free. US: annualcreditreport.com (the official site; free weekly from all three bureaus). Canada: Equifax Canada and TransUnion Canada directly, free.
• Highest-leverage cleanup moves: pay revolving cards below 30% utilization (below 10% is better), dispute reporting errors in writing, and bring any past-due account current.
• Do NOT close old cards or open new credit in the 90 days before applying. Closing old accounts shortens your credit history and raises utilization; new applications add hard inquiries and a brand-new account, both of which drop the score right when it matters.

Pre-qualification vs pre-approval

• Pre-qualification is a conversation. You self-report income and debts, the lender estimates a range, nothing is verified, and there is usually no credit pull. It costs nothing and is the right tool for shopping lenders at T-90. It is worthless attached to an offer.
• Pre-approval is a documented commitment. The lender pulls credit, verifies income (pay stubs, W-2s in the US, T4s in Canada), reviews bank statements, and issues a letter stating what they will lend, valid 60 to 90 days. In any competitive market, sellers expect to see it with the offer.
• Sequence them deliberately: pre-qualify broadly and cheaply first, then convert your best lender's quote into one full pre-approval about two months before offer season. Multiple mortgage credit pulls within a 14-to-45-day window count as one inquiry for scoring purposes, so rate-shop inside a tight window.

Down payment math: 20% vs 10% vs 5% vs 3.5% vs 0%

• 20% (conventional, both countries): no PMI in the US, no CMHC premium in Canada, best pricing, smallest payment. The classic target, and still the cheapest money you will ever "earn" if you can reach it.
• 10% (US conventional): decent rates with PMI of roughly 0.5%/year of the loan added until you reach about 20% equity. Often the rational middle ground when prices are rising faster than you can save.
• 5% (Canadian minimum under $500,000): triggers CMHC default insurance at 4.0% of the loan (4.0% for 5 to 9.99% down, 3.1% for 10 to 14.99%, 2.8% for 15 to 19.99%), added to your principal, not billed monthly. On a $475,000 loan that is roughly $19,000 (CAD) of premium you pay interest on for the whole amortization. Canadian minimums scale: 5% on the first $500,000 plus 10% on the portion above, and 20% required at $1.5 million+.
• 3.5% (US FHA) and 3% (US conventional first-timer): FHA charges MIP (about 0.85%/year plus an upfront premium) and in most cases it lasts the life of the loan, a significant 30-year cost. If your credit qualifies for Fannie Mae HomeReady or Freddie Mac Home Possible at 3% down with cancellable PMI, that usually beats FHA.
• 0% (US VA and USDA only): VA for veterans (no PMI, funding fee about 2.15% on first use), USDA for eligible rural areas. There is no 0%-down conventional path, and no 0% path at all in Canada.
• Match the down payment to your timeline and reserves. Draining every dollar to hit 20% and closing with no reserves is worse than 15% down with three months of housing cost in the bank.

The full cost of ownership beyond the mortgage

The mortgage payment is the floor, not the bill. Budget for the rest before you set your price ceiling:

• Maintenance: the 1% rule. Plan on roughly 1% of home value per year for routine maintenance and staged repairs. A $400,000 home runs about $4,000/year averaged over its life.
• Anchored repairs to expect by age: roof every 20 to 25 years (USD 8,000 to 20,000 / CAD 11,000 to 28,000), furnace or full HVAC every 15 to 20 years (USD 5,000 to 12,000 / CAD 7,000 to 17,000), water heater every 8 to 12 years (USD 1,000 to 2,000 / CAD 1,400 to 2,800). A home inspection report tells you where each system sits in its lifecycle.
• Property tax varies enormously. US: Texas and Illinois commonly run 2.0%+ of home value per year while California is capped near 1.0% by Prop 13; Iowa sits around 1.5%. Canada: Vancouver about 0.30%, Toronto about 0.66%, Ottawa about 1.05%, Halifax about 1.12%. Look up the actual rate for the specific municipality before you fall in love with a listing.
• Homeowners insurance: typically USD 1,200 to 2,000 / CAD 1,200 to 2,500 per year for a standard detached home, more in wildfire, flood, and hurricane zones.
• HOA / condo fees where applicable, and utilities that almost always run higher than the rental you came from (more square footage, and you pay for everything).

Stress-test a specific price against your income and debts with the Home Affordability Calculator; the Conservative 25/33 stance is the one that pre-budgets for this section.

First-time buyer programs: US

• FHA: 3.5% down with a 580+ score. The catch: MIP of about 0.85%/year plus an upfront premium, and in most cases MIP lasts the life of the loan. Best for buyers whose credit blocks conventional approval.
• VA: 0% down for veterans and qualifying service members, no monthly mortgage insurance, funding fee about 2.15% on first use (can be financed). Usually the best deal in the country for those who qualify.
• USDA: 0% down for eligible rural and some suburban-fringe areas, income limits apply.
• Conventional 3% first-timer programs: Fannie Mae HomeReady and Freddie Mac Home Possible offer 3% down with income limits and cancellable PMI, often beating FHA for buyers with a 680+ score.
• State down-payment assistance: nearly every state housing finance agency runs grants, forgivable second loans, or below-market first mortgages for first-time buyers. Search your state HFA before assuming you have to do it alone.

First-time buyer programs: Canada

• FHSA (First Home Savings Account, launched 2023): the single best Canadian first-time-buyer vehicle. Contribute up to $8,000/year, $40,000 lifetime. Contributions are tax-deductible (like an RRSP) AND withdrawals for a qualifying first home are tax-free (like a TFSA). No repayment, ever. If you are more than a year out from buying, open one now to start the contribution-room clock.
• RRSP Home Buyers' Plan (HBP): withdraw up to $35,000 per person ($70,000 per couple) from your RRSP tax-free for a first home, repaid over 15 years (about 1/15 per year; missed repayments become taxable income). Stacks with the FHSA.
• CMHC mortgage default insurance: mandatory, not optional, under 20% down. The premium is 4.0% of the loan for 5 to 9.99% down, 3.1% for 10 to 14.99%, 2.8% for 15 to 19.99%, and it is added to your loan principal rather than billed monthly (the key difference from US PMI: you pay interest on it for the whole amortization and cannot cancel it at 20% equity).
• Provincial land-transfer-tax (LTT) rebates: Ontario refunds first-time buyers up to $4,000, and Toronto adds a municipal rebate on top of the provincial one; BC's program covers up to $8,000 on qualifying homes; Quebec's transfer duties ("welcome tax") run 0.5 to 1.5% with municipal first-buyer programs varying.
• GST/HST rebate on new construction: buyers of newly built homes can recover part of the GST/HST; builders often net it into the sticker price, so confirm whether the quoted price is before or after rebate.

Closing costs and what to keep after closing

• Closing costs, US: 2 to 5% of the purchase price. Loan origination, title insurance, escrow setup, transfer and recording fees, and prepaid tax and insurance. On a $350,000 home, plan for USD 7,000 to 17,500 in cash beyond the down payment.
• Closing costs, Canada: 1.5 to 4% of the price, plus land-transfer tax. Legal fees, title insurance, adjustments, and provincial LTT: Ontario 0.5 to 2.5% sliding (Toronto adds a municipal LTT roughly doubling it), BC 1 to 3%, Quebec 0.5 to 1.5%, Atlantic provinces vary. First-time-buyer rebates (above) claw a chunk back.
• Reserves: 3 to 6 months of total monthly housing cost (mortgage + tax + insurance + utilities) in cash after closing, separate from your emergency fund. This is the buffer that absorbs the year-one surprises every new owner gets.
• Do not wire money to instructions received by email without verifying by phone. Wire fraud targeting closings is common; call the title company or lawyer at a number you found independently.

Common first-time-buyer mistakes

• 1. Maxing out the pre-approval. Banks approve to about a 36% debt-to-income ceiling. Living at 25 to 28% instead is the difference between a home and a financial hostage situation.
• 2. Ignoring closing costs. Saving exactly the down payment and discovering you need another 2 to 5% (US) or 1.5 to 4% plus LTT (Canada) in cash at signing.
• 3. Waiving the inspection contingency to win a bidding war. A USD 400 to 700 / CAD 500 to 900 inspection is the only thing standing between you and a five-figure foundation or knob-and-tube surprise. Sweeten the offer some other way.
• 4. Mistiming the rate lock. Locking before your pre-approval window aligns with your shopping timeline (locks expire, extensions cost money) or floating too long in a rising-rate market. Lock when you have an accepted offer and a realistic closing date.
• 5. Opening new credit during the process. The furniture store card and the new-car loan between pre-approval and closing change your DTI; lenders re-verify days before funding, and deals die this way.
• 6. Underestimating ongoing costs. The 1% maintenance rule, higher utilities, and the anchored repairs (roof, HVAC, water heater) are not in the mortgage payment.
• 7. Defaulting to 3.5% FHA when 5 to 10% conventional is reachable. FHA MIP usually lasts the life of the loan; conventional PMI cancels at about 20% equity. If your score qualifies for HomeReady / Home Possible, a few more months of saving often beats decades of MIP.

FAQ

Bottom line

Buying a house is a six-month financial project that happens to end with keys. Audit and clean your credit at T-180, pay down the debts that eat your ratio at T-120, shop lenders cheaply at T-90, convert to a real pre-approval at T-60, and only then start touring. Save for three numbers, not one: down payment, closing costs (US 2 to 5%, Canada 1.5 to 4% plus land-transfer tax), and 3 to 6 months of reserves. Use the programs your country actually offers (HomeReady/FHA/VA in the US; FHSA, HBP, and LTT rebates in Canada), keep the inspection contingency, and buy at 25 to 28% of gross income even when the bank approves more.