By the end of this guide you will have a clear pick between a 10, 15, 20, 25, or 30-year term (or an ARM) based on your budget, goals, and timeline, plus a worked dollar comparison to back it up. Before you start, gather your gross monthly income, monthly debts, savings, how long you plan to stay in the home, and a rough loan amount. A soft credit pull mortgage quote from Duane Buziak can supply real rate numbers without touching your score.
By Duane Buziak, NMLS #1110647
Step 1: Set Your Monthly Payment Ceiling
Start with cash flow, not the rate. Add up what the home costs each month beyond principal and interest: property taxes, homeowners insurance, HOA dues, and any mortgage insurance. Subtract that from the total housing budget you can carry after your other bills and your savings contributions. What remains is the most principal and interest (P&I) you can pay without strain.
Use debt-to-income (DTI) as a guardrail. Fannie Mae’s Selling Guide sets a maximum DTI of 50% for loans approved through Desktop Underwriter, and you can verify the current limits in its debt-to-income ratio section. That is a ceiling for approval, not a target. Many borrowers are more comfortable well below it, especially if they carry car payments or student loans.
The mistake to avoid is sizing the payment to the shortest term you can barely afford. A 10-year or 15-year payment that uses every spare dollar leaves nothing for a roof repair, a medical bill, or a few months of reduced income. The loan may be affordable on paper and fragile in practice.
It also helps to know what homes cost where you are shopping. The Census Bureau’s QuickFacts page for Virginia lists the median value of owner-occupied homes, a useful reality check on the loan amount you are testing.
Decision output: write down one number, your comfortable monthly P&I. Every term in the next steps gets tested against it.
Step 2: Define What You Want the Loan to Do
A term is a tool, so decide the job first. Almost every borrower falls into one of three goals:
- Lowest monthly payment: usually points to the longest term.
- Lowest total interest: points to a shorter term, as long as the payment fits your ceiling.
- Owning the home outright by a target date: points to the term that ends on that date, or a longer term with planned extra payments.
Life stage shapes the answer. A first-time buyer with a growing career and thin reserves often values flexibility. A homeowner ten years from retirement may want the mortgage gone by a specific age and can price a 15 or 20-year term around that.
Investors should tie the term to cash flow per property. A longer term can preserve rental cash flow and leave room for vacancies and repairs, while a shorter term builds equity faster but can squeeze monthly returns.
Two definitions matter here. The term is the length of the loan agreement, such as 30 years. Amortization is the schedule by which each payment is split between interest and principal. On a 30-year loan, early payments are mostly interest, so the balance falls slowly at first and faster near the end. A shorter term flips that balance toward principal sooner.
Write your goal next to your Step 1 number. If the goal is the lowest payment, you will probably end up at 30 years. If it is the lowest total interest, find the shortest term that stays under your ceiling.
Step 3: Compare Rates Across Term Lengths
Shorter terms usually carry lower rates than 30-year fixed loans, but the spread moves daily. As of October 2026, check Freddie Mac’s Primary Mortgage Market Survey for the current 15-year and 30-year averages rather than relying on a number in an article. Averages are a benchmark only. Your own rate depends on credit, down payment, property type, and loan size.
Ask for quotes on every term at once, not just 30 and 15. The 20-year and 25-year options often fit between the two payments, and one of them may land under your Step 1 ceiling when the 15-year does not.
Duane Buziak shops hundreds of wholesale options at one time, so a single request can surface pricing for each term side by side. The process starts with a no hard inquiry mortgage pre approval using a NoTouch Credit Pull on Vantage Score 4.0, so comparing terms does not cost you credit points. Rates are never guaranteed until locked, but you will see real numbers instead of advertised teasers.
The mistake to avoid is comparing only rates. A 15-year loan with a lower rate can still produce a payment that breaks your budget, and a 30-year loan with a higher rate can cost far more over its life. For each quote, record three figures:
- The monthly P&I.
- The total interest over the full term.
- The years to payoff.
Lowest rate does not equal best loan. The best loan is the one whose payment fits your ceiling and whose cost serves your goal.
Step 4: Run the Numbers on a Worked Example
The figures below are an illustration, not current quotes. Suppose you borrow $400,000 and assume these rates: 6.25% for 30 years, 6.00% for 25 years, 5.75% for 20 years, and 5.50% for 15 years. Using the standard amortization formula, the results are:
- 30-year at 6.25%: about $2,463 per month, about $486,600 total interest, 30 years to payoff.
- 25-year at 6.00%: about $2,577 per month, about $373,200 total interest, 25 years to payoff.
- 20-year at 5.75%: about $2,808 per month, about $273,900 total interest, 20 years to payoff.
- 15-year at 5.50%: about $3,268 per month, about $188,300 total interest, 15 years to payoff.
The 15-year payment is roughly $805 higher each month than the 30-year. In exchange, you save about $298,300 in interest and own the home 15 years sooner. If your Step 1 ceiling is $2,800, the 20-year is the shortest term that fits.
Now the reverse view. Suppose you took the 30-year and invested that $805 monthly difference at a hypothetical 5% annual return. After 15 years the account would hold roughly $215,000, while the 30-year balance would still be about $287,000. Investment returns vary and are never guaranteed, and the 30-year borrower keeps liquidity the 15-year borrower lacks. But the example shows that “invest the difference” only wins if you reliably invest it, and earn more than the mortgage rate. Compare the gap against your own discipline and goals.
Step 5: Stress-Test Your Choice Against Your Timeline and Risk
Time in the home changes which number matters. If you expect to sell or refinance within 5 to 7 years, total interest over the full term matters less than the balance you have paid down by then. In the example above, after 7 years the 30-year borrower has paid the balance down by about $40,000, versus about $147,000 on the 15-year.
Next, check reserves. After your down payment and closing costs, confirm you still hold 3 to 6 months of expenses under the payment you chose. If the answer is no, step up to a longer term.
The 30-year-and-prepay strategy
You can take the flexible 30-year payment and add extra principal voluntarily. That gives you a safety valve: pay more in good months, drop back to the required payment in lean ones. First confirm there is no prepayment penalty by checking your Loan Estimate and the CFPB’s page on prepayment penalties.
When an ARM makes sense
A 5/6 or 7/6 adjustable-rate mortgage holds a fixed rate for 5 or 7 years, then adjusts every 6 months. Consider one only for a known short horizon. Ask about three caps: how much the rate can rise at the first adjustment, how much at each later adjustment, and the maximum over the life of the loan. Those caps define your worst-case payment, so test that number against your ceiling too.
Refinancing later is possible but carries costs and requires qualifying again. Cash-out refinances up to 90% are one route Duane Buziak offers if your needs change.
Step 6: Lock In Your Term and Verify It on Your Loan Estimate
Once you have chosen, the Loan Estimate is where you confirm it. Per the CFPB’s Loan Estimate explainer, verify the loan term, interest rate, and monthly P&I on page 1, then find the total interest percentage (TIP) on page 3. The TIP shows the total interest you will pay over the loan’s life as a percentage of the loan amount, which makes terms easy to compare. A 30-year TIP will be much higher than a 15-year TIP, as the example above suggests.
Lock the rate once the term is chosen, and confirm the lock period covers your closing date. A lock that expires early can leave you repricing at the worst moment.
Here is how the options compare as of October 2026. Product menus and processes change, so check each company’s current site before deciding:
- The Mortgage Ally by Duane Buziak: a mortgage broker that compares hundreds of wholesale options at once; quotes on 10 through 30-year terms and ARMs; a no credit hit mortgage application at the quote stage; realtor referrals and fast close times.
- Rocket: a direct mortgage company offering its own loan products; confirm available terms and quote credit-pull practices on its site.
- Movement: a direct mortgage company offering its own loan products; confirm available terms and quote credit-pull practices on its site.
- Veterans United: a company focused on VA loans for service members and veterans; confirm term options and conventional offerings on its site.
The structural difference is that a broker can price one term across many sources, while a single company shows its own menu. Ask Duane Buziak for a quote across every term and compare them against your ceiling.
Recheck Your Ceiling, Then Price Every Term
Before you apply, compare your chosen payment against the number you wrote in Step 1. If it fits with room to spare, you are ready. If it does not, move to the next longer term and run the check again.
Your dream home is within reach: discover what hundreds of wholesale options can offer you in one simple search with zero impact to your credit score. Get your free mortgage rate quote today and let The Mortgage Ally by Duane Buziak shop the market to secure you the best possible terms with our client-first approach.
