Mortgage Calculator San Francisco, CA

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Payment breakdown
Amortization schedule
Payment breakdown
Monthly Payment

How is my monthly payment calculated?
Principal and Interest
Private Mortgage Insurance
Property Tax
Homeowners Insurance
HOA/Other
Amortization schedule
Principal Remaining Interest Paid Principal Paid
Estimated Payoff
Dec 2025

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Whether you’re buying a home or ready to refinance, our professionals can help.

 

San Francisco, CA, renowned for its iconic landmarks and vibrant culture, is also a hotspot for real estate endeavors. Delving into home ownership in this illustrious city presents its own set of financial intricacies. This is where the Mortgage Calculator steps in to simplify the maze. Crafted with precision, this tool assists you in adjusting your down payment and overall purchase values, leading you to a monthly commitment that aligns seamlessly with your financial objectives.

Benefits of Using the Mortgage Calculator:

  • Dynamic Down Payment Adjustments: San Francisco’s diverse housing market demands flexibility. Our calculator empowers you to tweak your down payment, providing instant feedback on monthly obligations.
  • Versatile Purchase Value Modifications: Adapt the entire purchase sum in harmony with your budget or the kind of homes you’re contemplating in San Francisco’s eclectic neighborhoods, ensuring a thorough understanding of your imminent investment.
  • Strategic Financial Visualization: The calculator goes beyond mere numbers, laying out a clear trajectory of your mortgage payments, invaluable for your long-term fiscal planning amidst the city’s scenic bay views.

How the Mortgage Calculator Operates:

  1. Feed in Core Data: Kick-start by detailing the property’s price, your chosen down payment, the loan period, and the prevailing interest rate.
  2. Personalize to Fit: Harness the adjustable features to fine-tune your down payment and overall purchase price, keeping the city’s unique real estate dynamics in mind.

The Mortgage Calculator for San Francisco home buyers is a beacon for those looking to navigate the property waters of this coastal metropolis. By granting the flexibility to modify vital financial metrics, it becomes an essential tool, ensuring that every decision made is informed and well-calculated.

If you’re looking for financing in San Francisco, CA, we can help. Call us today to have your mortgage questions answered or visit our website to get an instant rate quote.

Common Mortgage Calculator Terms

You can use our mortgage payments calculator to provide yourself with information about the estimated monthly mortgage payments you’ll make on a new home, with the option to include your anticipated tax, insurance and PMI costs. The following types of information can be entered into the mortgage calculator to give you the best results:

By Home Price

Work forward based on the price of the home you want to figure out your best loan term and potential monthly payment.

By Affordability

Use your down payment and monthly budget to discover how much home you can afford, then save up to $3000 by comparing top lender quotes.

By Monthly Payment

Input your monthly payment to discover what kind of loan will work best for you, then fill out an application with a lender to verify the estimate.

Bi-Monthly Payment

Pay every other week instead of once a month and save thousands over your loan term by reducing the principal amount quickly.

Home Price

You can input the amount you plan to offer for the home of your dreams or run the numbers based on the home list price.

Down Payment

Take your savings, deduct the amount you’ll need for closing costs, and what’s left will serve you as a down payment.

Interest Rate

Remember that your interest rate will vary depending on the lender you choose, your loan program, and your credit score.

Loan Program

Depending on the type of loan you get (FHA, VA, USDA, or conventional), your finances will be impacted differently.

Property Tax

The assessed value of the home multiplied by the local tax rate will give you the estimated amount of your property tax.

Home Insurance

Home value and location will both impact how much you will have to pay for home insurance to protect your investment.

Monthly Private Mortgage Insurance

You’ll need to pay PMI ranging from 0.5% to 2% of the loan amount if your down payment amounts to less than 20% of the home price.

HOA Dues

A homeowners association (HOA) will charge monthly or annual dues, so find out if your home is located in an affected neighborhood.

Additional Principal Payment

If you can make a larger than required payment every month, the additional funds can go to reduce your loan principal.

Annual Income

Divide your annual income by 12 months to arrive at the monthly income that will be used when determining your ability to repay.

Monthly Debts

Add all recurring expenses or payments that you owe every month (like credit card bills or auto loan payments) to arrive at your monthly debt.

DTI

Compare your monthly income and monthly debt to find out what your debt to income (DTI) ratio is, the lower this number is, the better.

Desired Monthly Payment

A bigger monthly payment means you’ll pay off your loan more quickly, cutting years and interest costs off your mortgage.

Biweekly Payments

If you make half of a mortgage payment every other week, it works out to a whole extra mortgage payment every year.

Estimated Payoff

Ask your mortgage company to provide you with your amortization schedule so you can learn your estimated payoff date.

Rate quote isn’t what you expected?

If your instant rate quote isn’t what you expected, we can provide counsel on how to potentially transform your quote into something more acceptable. Sammamish Mortgage is a family-owned mortgage company with over 30 years of experience in the industry. We proudly serve customers in the Pacific Northwest region. We serve WA, ID, OR, CO and CA. If you’re looking to buy a home in one of these states, we can help!

Our Reviews

David Brauhn
December 10, 2025
Straightforward, honest, personal, flexible, and fast service. They kept me informed along the way and gave me options that other lenders tried and failed to match. They treated me like a valued customer.
Cynthia Eichner
November 21, 2025
Working with the team at Sammamish was extremely positive. They care and help you navigate all the details required with grace, professionalism and care. highly recommend the team to anyone!
Liz Frazer
November 17, 2025
Very easy to work with -- Ryan was always available if we had any questions. Highly recommend
Susan Williams
November 16, 2025
Excellent. Kevin was fabulous to work with. Professional, communicative and a true joy. He found a solution to my needs that many others could not.
Noriyasu Li
November 14, 2025
Nick and Tonya were absolutely fantastic to work with! From start to finish, the process was incredibly smooth and stress-free. Super competitive rates, and every single person we interacted with - from the loan officer to the processor and even the owner - was professional, friendly, and genuinely helpful. Went through 7-8 quotes and rates and they still came out on top. Highly recommend them to anyone looking for a great mortgage experience!
Rayna Ji
November 14, 2025
We had a fantastic experience working with Sammamish Mortgage! From start to finish, the team was incredibly responsive, transparent, and efficient. They offered one of the best interest rates we found during our mortgage shopping process without charging any processing or junk lender fees a huge plus that made a real financial difference. They were also very flexible and accommodating, especially as we adjusted our down payment structure a few times throughout the process. Despite the changes, they stayed on top of everything and helped keep us on track for a smooth and quick closing. If youre looking for a lender whos professional, competitive, and truly client focused, Id highly recommend them. Were so glad we chose them and would happily work with them again in the future.
Jeff Boekelman
November 12, 2025
Christine and Barb were excellent to work with throughout the process.

FAQs

Are there fees tied to mortgage rates in San Francisco? 

Yes, fees include points, origination fees, and closing costs.

How does income impact rates? 

Your income affects loan approval, not the rate directly.

Does credit score affect rates in San Francisco, CA?

Yes — higher credit scores get lower rates, while lower credit scores typically mean higher mortgage rates.

Do self-employed borrowers pay higher rates in San Francisco? 

Not always, but self-employed borrowers may face stricter documentation.

Can I get a mortgage with bad credit? 

Yes, but expect higher rates or limited options. If your rate is particularly bad, you may face rejection altogether.

Does debt-to-income ratio matter in California?

Yes — lenders use your debt-to-income ratio to assess your risk.

Do I need equity to refinance in San Francisco, CA? 

Usually yes, equity is needed to refinance, unless you’re using a government-backed program.

How is APR calculated? 

APR includes interest, fees, and other loan costs.

What’s a discount point? 

A discount point is a prepaid interest fee to reduce your rate.

What’s a rate buydown? 

A rate buydown is a temporary reduction in rate paid by the seller.

Does Sammamish Mortgage offer online pre-qualification? 

Yes—our digital platform lets you get pre-qualified quickly and easily from the comfort of your home.

More Online Tools That Matter

Our additional mortgage calculator tools are also free, and use data from your unique loan situation to give you a better idea of your estimated monthly mortgage payments. You can update the amount of your budgeted home price, your down payment, the expected interest rate, and your anticipated loan term to make adjustments to your projected monthly payment.


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