The offer has been accepted, the mortgage is moving ahead, and then the closing statement arrives. For many buyers, that is when the top closing cost mistakes become expensive. The purchase price and deposit get most of the attention, but completion day also requires cash for taxes, legal work, lender requirements and adjustments. A little planning now can prevent a stressful scramble later.

Why closing costs catch buyers out

Closing costs are not one single fee. They are a group of charges that arise as ownership changes hands and the mortgage is registered. Some are predictable early on, while others depend on the property, the lender, the municipality and the terms negotiated in the agreement of purchase and sale.

For a typical Ontario purchase, it is sensible to set aside roughly 1.5% to 4% of the purchase price for closing costs, on top of your deposit and down payment. That range is only a planning guide, not a quote. A first-time buyer receiving a land transfer tax rebate may land closer to the lower end, while a property in Toronto or a purchase with extra lender conditions can cost more.

The key is to separate money needed for the down payment from money needed to complete the purchase. Both must be available in cleared funds when your real estate lawyer asks for them.

1. Treating the deposit as the whole upfront cost

The deposit is part of your down payment. It is not a fund that covers legal fees, land transfer tax or a home inspection. Buyers sometimes put every available dollar towards the down payment to get a better mortgage rate or reduce the loan amount, only to discover they are short of cash at closing.

Before you firm up an offer, work backwards from the funds you have available. Account for the deposit already paid, your remaining down payment, estimated closing costs and a modest buffer. Keeping a buffer is not being overly cautious. Moving costs, immediate repairs, new locks and utility set-up can arrive in the same week as completion.

If your down payment is coming from savings, investments, a gift or the sale of another property, make sure the source and timing meet the lender’s requirements. A lender may need a clear paper trail, particularly for large deposits that appear shortly before closing.

2. Underestimating land transfer tax

Land transfer tax is one of the largest closing costs for many Ontario buyers. It is based on the purchase price, and it can be thousands of dollars. Buyers purchasing in Toronto may face both provincial and municipal land transfer tax, which changes the calculation considerably.

First-time home buyer rebates can reduce the bill, but they do not automatically make it disappear. Eligibility rules matter, and the rebate has limits. For example, a buyer may not qualify if they have previously owned a home anywhere in the world, subject to the applicable rules and their spouse’s ownership history.

Do not rely on a rough figure from a friend who bought years ago or in another municipality. Ask for a current estimate based on your specific purchase price, location and buyer status. It is far easier to plan for the real number than to find several thousand pounds at the last minute.

3. Focusing on the rate and missing lender fees

A low mortgage rate is valuable, but it is not the whole mortgage. Some files require an appraisal, and some lenders charge administrative, assignment or underwriting fees. This can be more common with alternative lending solutions, private mortgages, self-employed applications or files that fall outside standard lending guidelines.

There is nothing wrong with a mortgage that includes a fee if it solves a real problem and the overall structure makes sense. The mistake is agreeing to it without understanding the full cost, when it is due and whether it can be paid from mortgage proceeds or must be paid in cash.

Ask your broker to explain the lender fee, appraisal cost, term, prepayment privileges and renewal options in plain language. A mortgage should fit your life, not simply look good in a rate advertisement. This is especially relevant if you expect to sell, refinance, receive a bonus or make a large payment during the term.

4. Forgetting legal fees, disbursements and title insurance

Your real estate lawyer does more than sign paperwork. They review the purchase contract, search title, receive and distribute funds, register the property and mortgage, and confirm the transaction can close properly. Their quote commonly includes legal fees plus disbursements, which are separate costs for items such as registrations, searches, courier charges and tax certificates.

Title insurance may also be recommended or required. It is generally a one-time premium that can protect against certain title-related issues, but it is not a replacement for understanding the property or the agreement you signed.

Get an itemised estimate early, rather than budgeting for one round number you saw online. You do not need to become an expert in legal paperwork, but you should know what is included, what is estimated and what could change before completion.

5. Overlooking adjustments on the statement of adjustments

This is one of the most common top closing cost mistakes because the charge is easy to miss until the final statement arrives. The statement of adjustments divides costs that have been paid in advance or are owed as of the closing date. Property taxes, condominium fees, fuel oil for an oil-heated property, rental items and sometimes utility costs may be adjusted between buyer and seller.

For example, if the seller has already paid property taxes for a period after you take ownership, you may reimburse them for your share. If they owe an amount for the period before closing, you may receive a credit. Neither result is automatically good or bad. It is simply an effort to make sure each party pays their proper portion.

Condominium purchases deserve extra attention. Ask whether there are any special assessments, arrears, move-in fees, lift booking charges or rental contracts for equipment. Your lawyer and real estate professional can help you review the available documents, but ask the question before you remove conditions whenever possible.

6. Assuming mortgage insurance is fully financed

If your down payment is below 20%, mortgage loan insurance will usually apply. The insurance premium is often added to the mortgage rather than paid in cash, which leads some buyers to believe there is nothing else to consider.

In Ontario, however, provincial sales tax on the mortgage insurance premium is generally payable at closing and cannot usually be added to the mortgage. Depending on the mortgage amount and premium, this can be a meaningful cash requirement.

This is a good example of why a mortgage payment estimate is not the same as a complete cash-to-close estimate. Ask for both. You want to see your expected payment, your mortgage amount and the cash you will need on completion day as separate figures.

7. Leaving the final numbers until the last week

The final amount can change as documents are completed and adjustments are confirmed. That is normal. Waiting until the last week to ask for estimates is not. Bank transfers have cut-off times, investment withdrawals can take days, and a lawyer may require funds by bank draft or wire transfer rather than a personal cheque.

Start the conversation well before closing. Confirm who will provide the final statement, when you will receive it, the acceptable payment method and exactly where funds must be sent. Be alert for fraud as well. If you receive new wiring instructions by email, verify them by calling your lawyer’s office using a trusted phone number. Do not rely on contact details in a suspicious message.

A calmer way to prepare for completion

Once your offer is accepted, create a simple closing-cost plan with your mortgage professional and real estate lawyer. Keep a written estimate of land transfer tax, legal costs, lender charges, insurance-related tax and likely adjustments. Then add a buffer for the items that are not known yet.

For buyers in Halton Hills, Burlington, Oakville, Milton and across the GTHA, local property prices can make even small percentage-based costs significant. Clear guidance early in the process makes a real difference. Peter at EasyApproval.ca can help you understand the mortgage side of the numbers, including what your lender requires and when funds will be needed.

A home purchase should feel exciting, not like a race to move money at the eleventh hour. Ask the awkward money questions early, keep your closing funds separate from your down payment, and give yourself room for the final statement to do its job.