Can You Refinance an ARM Into a Fixed Rate Mortgage in California?

An adjustable rate mortgage can be an attractive financing option when its introductory interest rate is lower than available fixed rate alternatives. However, the advantage may change when the initial fixed period expires and the mortgage begins adjusting according to market conditions.

For California homeowners who want greater control over their future housing expenses, refinancing an adjustable rate mortgage into a fixed rate mortgage may be worth considering.

This approach replaces the existing ARM with a new mortgage that has an interest rate fixed for the agreed loan term. It can eliminate future interest rate adjustments on the new mortgage and make principal and interest payments more predictable.

However, refinancing is not automatically the most economical choice. Closing costs, the available fixed rate, remaining loan balance, repayment term, and expected time in the property all influence the decision.

This guide explains when California homeowners can refinance an ARM, what to evaluate before applying, and how to determine whether switching to a fixed rate mortgage makes financial sense.

Can You Convert an Adjustable Rate Mortgage Into a Fixed Rate Loan?

Yes. Homeowners can generally replace an existing adjustable rate mortgage with a new fixed rate mortgage through a refinance, provided they meet the new lender's eligibility and underwriting requirements.

The new mortgage pays off the outstanding balance of the existing ARM. The homeowner then makes payments under the new loan agreement.

For example, consider a California homeowner with an outstanding ARM balance of $420,000. The introductory interest rate is 5.25%, and the first adjustment is approaching.

The homeowner receives an offer for a new 30 year fixed rate mortgage at an illustrative rate of 6.00%.

The borrower can compare the proposed fixed rate loan with the expected ARM payment after its adjustment. If the fixed rate option provides an acceptable combination of payment stability and total borrowing costs, refinancing may be appropriate.

It is important to understand that refinancing does not simply change the interest rate on the existing mortgage. It creates a new loan with its own interest rate, repayment schedule, closing costs, and approval requirements.

What Changes When You Replace an ARM With a Fixed Rate Mortgage?

The biggest difference is how the interest rate behaves after the new loan closes.

With an ARM, the interest rate can change at scheduled intervals after the introductory period. The amount of each adjustment depends on the loan's index, margin, adjustment frequency, and rate caps.

A fixed rate mortgage follows a different structure. Its contractual interest rate remains unchanged throughout the agreed repayment term.

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A fixed rate mortgage makes the principal and interest portion of the monthly payment more predictable. However, the total amount paid toward housing can still change because property taxes, homeowners insurance, and other expenses may fluctuate.

Five Reasons California Homeowners Consider Refinancing an ARM

1. Preparing for the First Interest Rate Adjustment

The first adjustment can change the financial outlook of an ARM.

A homeowner who initially selected a lower introductory rate may face a higher payment when the fixed period ends. Reviewing refinance options before that date provides time to compare loan offers and complete the application process.

The decision should be based on the expected adjusted rate and the contractual adjustment limits, rather than assuming the interest rate will automatically reach its maximum.

2. Securing Long Term Payment Stability

Some homeowners prefer knowing what their principal and interest payment will be over the remaining loan term.

A fixed rate refinance removes the uncertainty associated with future ARM adjustments. This can make household budgeting easier, particularly for borrowers who plan to remain in their California property for an extended period.

3. Taking Advantage of a Competitive Refinance Offer

If available fixed mortgage rates become more attractive than the expected cost of retaining the ARM, refinancing may provide an opportunity to reduce future interest expenses.

However, the comparison must include closing costs and the remaining repayment period. A lower advertised rate does not necessarily mean the new loan will produce lower overall borrowing costs.

4. Changing the Mortgage Repayment Period

A refinance can allow borrowers to select a different repayment term.

For example, a homeowner with 25 years remaining on an ARM might consider a 20 year fixed rate mortgage. The shorter term may increase the monthly payment but can reduce the period over which interest is charged.

Alternatively, extending the repayment period may lower the required monthly payment but could increase total interest expenses.

5. Improving the Overall Mortgage Structure

A refinance may also provide an opportunity to review the mortgage amount, repayment schedule, and available loan options.

However, homeowners should avoid extending the loan term simply to obtain a lower payment without understanding the additional interest expense.

How to Determine Whether Refinancing Is Financially Worthwhile

Before replacing an ARM, compare the existing mortgage with the proposed fixed rate loan using actual loan information.

Consider the following example.

A California homeowner has an ARM with a $420,000 outstanding balance and 25 years remaining. The introductory period is ending, and the homeowner wants to compare retaining the ARM with refinancing.

The following assumptions are used for illustration:

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The 7.00% ARM rate is a hypothetical post adjustment rate, not a prediction. The 6.00% fixed rate and $8,500 closing costs are also illustrative assumptions.

Monthly payment comparison

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Under these assumptions, the new fixed rate mortgage reduces the estimated monthly principal and interest payment by approximately $262.

Calculate the refinance break even period

The break even period estimates how long the monthly payment savings would take to recover the refinance costs.

Formula:

Break even period = Refinance costs ÷ Monthly payment savings

Using the example:

$8,500 ÷ $262 = approximately 33 months.

The homeowner would need approximately 33 months to recover the assumed closing costs through the modeled monthly payment difference.

This calculation is a simplified screening tool. It does not account for differences in principal repayment, remaining balances, future ARM adjustments, or the timing of the actual refinance. A complete comparison should evaluate total interest and outstanding principal over the expected ownership period.

What Are the Costs of Refinancing an ARM in California?

Refinancing involves a new mortgage transaction, so homeowners should review the expenses before deciding.

Potential costs include:

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The actual costs depend on the lender, property, loan amount, and transaction structure.

Homeowners should request a Loan Estimate and review the interest rate, annual percentage rate, closing costs, lender credits, and estimated cash required to close.

A refinance with lower upfront costs may have a higher interest rate. Another offer may require discount points to obtain a lower rate. Comparing these structures helps identify which offer is more suitable for the expected time in the property.

What Do Lenders Evaluate When Refinancing an ARM?

Approval for a new fixed rate mortgage depends on the lender's underwriting requirements and the borrower's financial circumstances.

Credit profile

Lenders review credit history and other credit information to assess the borrower's repayment record. A stronger credit profile may help qualify for more competitive loan terms.

Income and employment

Borrowers generally need to provide information supporting their ability to make the proposed mortgage payments. Documentation requirements may differ for salaried employees, self employed applicants, and borrowers with variable income.

Debt to income ratio

Debt to income ratio compares recurring monthly debt obligations with gross monthly income.

A lender uses this measure, along with other underwriting factors, to assess whether the proposed mortgage payment is manageable. Applicable limits depend on the loan program and the overall borrower profile.

Property value and available equity

The lender may evaluate the property's current market value and the outstanding mortgage balance to calculate the loan to value ratio.

Available equity can influence refinance eligibility, pricing, and whether mortgage insurance applies.

Existing mortgage payment history

The borrower's payment history may be reviewed as part of the application and underwriting process. Recent late payments or other credit events can affect eligibility.

There is no single credit score, equity percentage, or debt to income threshold that applies to every refinance. Requirements vary by loan program and lender.

What Documents Should You Prepare?

Having relevant financial and property information available can help organize the application process.

Commonly requested documents include:

• Recent pay statements.
• Employment and income information.
• Recent federal tax returns when required.
• W 2 forms or applicable 1099 documentation.
• Bank and asset account statements.
• Current mortgage statement.
• Homeowners insurance information.
• Property tax information.
• Details of outstanding loans and recurring debts.
• Documentation supporting additional income, when applicable.

Self employed borrowers may need additional business and income documentation. The lender will identify the documents required for the specific mortgage application.

Steps to Refinance an ARM Into a Fixed Rate Mortgage

Step 1: Review the Existing ARM Agreement

Identify the introductory rate expiration date, next adjustment date, index, margin, adjustment caps, and lifetime rate limit.

This information helps establish the possible future interest rate and payment under the existing loan.

Step 2: Compare Available Fixed Rate Offers

Request refinance quotes from lenders and compare the proposed rates, repayment terms, and estimated costs.

Avoid selecting a lender based only on the lowest advertised interest rate. Review the complete loan structure.

Step 3: Submit the Refinance Application

Once you identify a suitable offer, submit the application and provide the requested financial information.

The lender will review the application, verify income and assets, assess credit, and evaluate the property and existing mortgage details.

Step 4: Complete Property and Underwriting Reviews

Depending on the transaction, the lender may require an appraisal or another method of property valuation.

Underwriting reviews the application against the applicable loan program requirements. Additional documentation may be requested before approval.

Step 5: Review the Final Loan Terms

Before closing, examine the final interest rate, repayment period, monthly principal and interest payment, closing costs, and cash required.

Confirm that the final terms match the financial comparison that influenced your decision.

Step 6: Complete the Closing

After the required approvals and closing procedures are completed, the new mortgage pays off the existing ARM. The borrower then follows the repayment schedule established by the fixed rate loan.

When Should You Keep Your Existing ARM Instead?

Refinancing is not always the best financial decision.

Retaining the current ARM may be worth considering when:

• The expected adjusted rate remains competitive with available fixed rate offers.
• The homeowner plans to sell the property before refinance costs can be recovered.
• The existing mortgage has favorable terms.
• The new fixed rate would increase borrowing costs substantially.
• Closing costs would place unnecessary pressure on available cash.
• The homeowner can comfortably manage the possible future payment changes.

A homeowner should also consider whether the ARM's adjustment limits provide sufficient protection for their financial circumstances.

The decision should compare the expected cost of retaining the existing loan with the actual cost of obtaining a replacement mortgage.

Frequently Asked Questions

Can I refinance an ARM into a 30 year fixed rate mortgage?

Yes, subject to the lender's eligibility and underwriting requirements. A homeowner may be able to replace an existing ARM with a new 30 year fixed rate mortgage. However, extending the repayment period can increase total interest even when the monthly payment decreases.

Is it better to refinance before the ARM adjustment date?

It may be beneficial to begin comparing options before the first adjustment. This provides time to evaluate offers and complete the application process. However, refinancing before the introductory period expires may mean giving up a lower existing rate earlier than necessary.

Does refinancing an ARM always lower the monthly payment?

No. The new fixed rate could be higher than the existing ARM rate. The repayment term, loan balance, closing costs, and other loan features also influence the new payment.

Can I refinance if my property value has decreased?

Possibly. Eligibility depends on the current property value, outstanding mortgage balance, loan program, and lender requirements. A lower property value may affect the loan to value ratio and available refinance options.

Will refinancing remove private mortgage insurance?

Not automatically. Mortgage insurance requirements depend on the new loan program, loan to value ratio, and applicable eligibility rules. Review the new loan's mortgage insurance requirements before closing.

Can I refinance an ARM with less than 20% home equity?

Some refinance programs may permit borrowers with less than 20% equity, depending on the loan type and other requirements. Lower equity can affect eligibility, pricing, and mortgage insurance. Confirm the available options with the lender.

How long does an ARM refinance take?

The timeline varies according to lender processing, documentation, appraisal requirements, underwriting, and closing arrangements. Borrowers approaching an ARM adjustment should begin evaluating their options early rather than waiting until the final weeks.

Does a fixed rate mortgage guarantee that my entire housing payment will never change?

No. The interest rate and principal and interest payment generally remain constant on a standard fixed rate mortgage. Property taxes, homeowners insurance, and other housing expenses may still change.

Conclusion

Refinancing an adjustable rate mortgage into a fixed rate mortgage can help California homeowners gain greater control over future principal and interest payments. It may be particularly useful when the existing ARM is approaching its first adjustment and the available fixed rate terms offer a suitable alternative.

However, the decision should not be based only on avoiding a potential payment increase. Review the existing ARM's adjustment rules, compare actual refinance offers, calculate the break even period, and evaluate the total cost over the time you expect to own the property.

Merchants Home Lending can help homeowners review available mortgage options and understand how different loan structures affect their financing costs. The right approach is one that balances payment stability, borrowing expenses, and long term financial objectives.

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