Introduction
On August 20, 2026, mortgage rates are showing subtle shifts that could shape your homebuying or refinancing plans. While many lenders hold steady, a few credit unions like Aberdeen Proving Ground have nudged their Jumbo 30-year fixed rate up to 6.625%, marking a slight increase from last week. Meanwhile, Zillow’s data paints a slightly brighter picture with the lowest 15-year jumbo fixed rate at 5.125% through Certified Credit Union holding firm. Inflation expectations are inching higher, with the Federal Reserve’s breakeven inflation rates rising modestly, suggesting mortgage costs may not drop soon. Here’s what you need to know before locking in a rate, whether you’re buying your first home or considering an investment property, these nuances could impact your monthly payments more than you think.
At a glance
New Purchase - Jumbo 15 yrs Fixed
| Lender | 2026-08-20 Current | 2026-08-13 7 Days Ago | 2026-08-05 15 Days Ago | 2026-07-21 30 Days Ago | 2026-07-06 45 Days Ago | 2026-06-21 60 Days Ago | 2026-05-22 90 Days Ago | 2026-02-21 180 Days Ago |
|---|---|---|---|---|---|---|---|---|
| CERTIFIED FEDERAL CREDIT UNIONLOWEST | 5.13% | 5.13% | 5.13% | 5.13% | 5.13% | 5.13% | 5.13% | 5.13% |
| PUBLIX EMPLOYEES FEDERAL CREDIT UNION | 5.45% | 5.45% | 5.45% | 5.35% | 5.27% | 5.27% | 5.15% | 4.78% |
| SPACE COAST CREDIT UNION | 5.63% | 5.63% | 5.63% | 5.50% | N/A | 5.50% | 6.13% | 5.25% |
| ABERDEEN PROVING GROUND FEDERAL CREDIT UNION | 6.00%▲ 13 bps | 5.88% | 5.88% | 5.88% | 5.63% | 5.63% | 6.00% | 5.25% |
| TROPICAL FINANCIAL CREDIT UNION | 6.00% | 6.00% | 6.00% | 5.75% | 5.63% | 5.63% | 5.75% | 5.50% |
| SECURITY SERVICE FEDERAL CREDIT UNION | 6.38% | 6.38% | 6.38% | 6.38% | 6.38% | 6.38% | 6.38% | 6.00% |
Sorted by current rate, lowest first. Scroll sideways for rate history. ▼ means the current rate is lower than last week, ▲ higher.
New Purchase - Jumbo 30 yrs Fixed
| Lender | 2026-08-20 Current | 2026-08-13 7 Days Ago | 2026-08-05 15 Days Ago | 2026-07-21 30 Days Ago | 2026-07-06 45 Days Ago | 2026-06-21 60 Days Ago | 2026-05-22 90 Days Ago | 2026-02-21 180 Days Ago |
|---|---|---|---|---|---|---|---|---|
| CERTIFIED FEDERAL CREDIT UNIONLOWEST | 5.88% | 5.88% | 5.88% | 5.88% | 5.88% | 5.88% | 5.88% | 5.88% |
| PUBLIX EMPLOYEES FEDERAL CREDIT UNION | 5.93% | 5.93% | 5.93% | 5.86% | 5.77% | 5.76% | 5.67% | 5.35% |
| UNITED CREDIT UNION | 6.00% | 6.00% | 6.00% | 6.00% | 6.00% | 6.00% | 6.00% | N/A |
| TROPICAL FINANCIAL CREDIT UNION | 6.13% | 6.13% | 6.13% | 5.88% | 5.75% | 5.75% | 6.00% | 5.63% |
| SPACE COAST CREDIT UNION | 6.38% | 6.38% | 6.38% | 6.25% | N/A | 6.25% | 6.88% | 6.00% |
| WINGS FINANCIAL CREDIT UNION | 6.38%▼ 12 bps | 6.50% | 6.50% | 6.38% | 6.25% | 6.25% | 6.38% | 5.63% |
| ABERDEEN PROVING GROUND FEDERAL CREDIT UNION | 6.63%▲ 25 bps | 6.38% | 6.38% | 6.50% | 6.13% | 6.13% | 6.63% | 5.75% |
| SECURITY SERVICE FEDERAL CREDIT UNION | 6.88% | 6.88% | 6.88% | 6.88% | 6.88% | 6.88% | 6.88% | 6.50% |
Sorted by current rate, lowest first. Scroll sideways for rate history. ▼ means the current rate is lower than last week, ▲ higher.
ABERDEEN PROVING GROUND FEDERAL CREDIT UNION
As of August 20, 2026, Jumbo 15 Year Fixed purchase loans carry a rate of 6.0%, marking an increase of 12.5 basis points from one week ago and also rising by the same margin compared to 30 days prior. Meanwhile, the Jumbo 30 Year Fixed purchase rate stands at 6.625%, up by 25 basis points over the past week and 12.5 basis points higher than a month ago. These upward adjustments reflect tightening yield spreads and contribute to increased borrowing costs for jumbo loan applicants.
Borrowers seeking long-term stability might consider the 15-year fixed option at 6.0%, currently the lower rate in this segment, which may reduce total interest paid despite slightly higher monthly payments. Those evaluating purchase financing should factor recent rate escalations into affordability assessments. Members are advised to review their mortgage strategy carefully; for example, shorter terms could mitigate exposure to further rate increases. For details, visit https://www.apgfcu.com/rates/mortgage-rates.html.
CERTIFIED FEDERAL CREDIT UNION
As of August 20, 2026, mortgage rates at CERTIFIED remain stable with no changes over the past week or month. The 15-Year Fixed Purchase loan holds steady at 5.125%, representing the lowest rate among today’s offerings and providing a lower cost of borrowing for members prioritizing shorter-term commitments. The 30-Year Fixed Purchase loan remains at 5.875%, unchanged from recent periods, reflecting consistent yield spreads in longer-term financing.
This stability benefits first-time buyers seeking predictable monthly payments and members planning long-term homeownership without exposure to rate volatility. Veterans or refinancing borrowers should monitor these rates closely, as unchanged yields suggest limited immediate savings but highlight the value of evaluating fixed-rate options if they prioritize payment certainty.
Members are advised to consider fixed-rate products for stability and assess refinancing only when potential savings exceed associated costs. For details, visit https://www.certifiedfed.com/rates-2/#real_estate.
PUBLIX EMPLOYEES FEDERAL CREDIT UNION
As of August 20, 2026, 15-year fixed purchase loans hold the lowest rate at 5.45%, unchanged from last week but up 10 basis points versus 30 days ago. The 30-year fixed purchase rate remains steady at 5.93%, also flat over seven days but increased by 7 basis points month-over-month. These modest upward shifts indicate a gradual rise in borrowing costs, impacting buyers prioritizing long-term affordability and monthly payment stability. First-time purchasers may find the 15-year fixed option cost-effective for reducing total interest outlay, while those seeking lower monthly payments might consider the 30-year fixed, despite its slightly higher yield spread. Given these trends, members should evaluate their mortgage horizons and potential refinancing benefits carefully, especially if future rate movements affect their financial plans.
SECURITY SERVICE FEDERAL CREDIT UNION
As of August 20, 2026, 15-Year Fixed Jumbo and 30-Year Fixed Jumbo mortgage rates remain steady at 6.375% and 6.875%, respectively. Both products show no change over the past week or month, maintaining their yield spreads despite broader market volatility. These stable rates indicate consistent borrowing costs for members seeking jumbo loans for home purchases.
For borrowers prioritizing lower interest expenses over shorter terms, the 15-Year Fixed Jumbo at 6.375% offers the most favorable rate among jumbo options. Veterans and high-income buyers evaluating long-term financing can rely on these fixed-rate programs to avoid rate uncertainty inherent in adjustable mortgages.
Members should consider locking in current fixed rates if they value payment predictability. Additionally, those with existing jumbo loans may assess refinancing only if potential savings exceed closing costs, given the unchanged rate environment.
For details, visit https://www.ssfcu.org/rates/home-loan-rates.
SPACE COAST CREDIT UNION
As of August 20, 2026, 15-year fixed purchase mortgages hold the lowest rate at 5.625%, unchanged over the past week but up by 12.5 basis points compared to 30 days ago. Similarly, the 30-year fixed purchase mortgage remains steady at 6.375%, also rising by 12.5 basis points month-over-month. These modest increases in yield spreads indicate a slight uptick in borrowing costs for homebuyers locking in fixed rates today.
For members prioritizing rate stability, the unchanged week-over-week rates suggest limited short-term volatility; however, those sensitive to monthly rate shifts should evaluate their mortgage timing carefully. First-time buyers and long-term planners might consider fixed-rate options to mitigate future rate uncertainty. Given these trends, it is prudent to assess refinancing viability if potential savings surpass associated expenses.
For details, visit https://www.sccu.com/personal/consumer-rates#mortgage.
TROPICAL FINANCIAL CREDIT UNION
On August 20, 2026, 15-year Jumbo fixed-rate purchase loans remain steady at 6.0%, unchanged from last week but up 25 basis points compared to 30 days ago. Similarly, the 30-year Jumbo fixed-rate purchase holds at 6.125%, also stable week-over-week with a 25 basis point increase over the past month. These yield spreads indicate a modest rise in borrowing costs for jumbo loan borrowers relative to one month prior, reflecting tightening conditions in long-term fixed-rate financing.
Members seeking jumbo mortgages should note that current rates are elevated compared to recent months; first-time buyers and high-net-worth individuals must factor these costs into their affordability calculations. Given rate stability this week, those prioritizing payment predictability might consider fixed-rate options while evaluating refinancing only if potential savings exceed associated fees.
UNITED CREDIT UNION
As of August 20, 2026, the 30-Year Fixed Jumbo Purchase mortgage rate remains steady at 6.00%, showing no change over the past 7 and 30 days. This stability in jumbo loan rates maintains current yield spreads and borrowing costs for high-value homebuyers, supporting consistent monthly payment expectations. For members pursuing jumbo purchases, the absence of rate movement suggests a predictable financing environment without increased cost pressure. First-time buyers or those considering refinancing with jumbo products can evaluate fixed-rate options for long-term budget certainty. Given these stable rates, members should consider their mortgage strategy carefully and assess refinancing only if potential savings exceed associated costs. For details, visit https://www.unitedfcu.com/rates-and-fees/rates/mortgage-rates.
WINGS FINANCIAL CREDIT UNION
On August 20, 2026, the 30-Year Fixed Jumbo Loan for purchase purposes is priced at 6.375% with 1.0 point, holding steady from 30 days ago but showing a modest decline of 12.5 basis points compared to last week’s 6.5%. This slight narrowing in yield spreads reduces the immediate cost of borrowing for high-value property buyers. For members pursuing jumbo loans, this stability may support clearer long-term budgeting without unexpected rate volatility. First-time buyers and veterans should monitor these trends as jumbo rates influence market liquidity and financing options indirectly. Given this, consider fixed-rate jumbo products if you prioritize payment certainty amid current market fluctuations, and evaluate refinancing opportunities if projected savings exceed associated costs. For details, visit https://www.wingscu.com/rates/mortgages-purchase#main.
Zillow National Average
As of August 20, 2026, mortgage rates are generally down, indicating a favorable environment for borrowers. The 15-Year Fixed Rate Jumbo has decreased to 6.138%, reflecting a change of -0.24 basis points over the past day. Meanwhile, the 30-Year Fixed Rate Jumbo stands at 6.338%, with a decline of -0.17 basis points in the same timeframe. Over the past week, the most significant shift was observed in the 30-Year Fixed Rate Jumbo, which fell by 0.21 basis points. Borrowers may find opportunities to secure lower financing costs with these reduced rates; thus, evaluating options and locking in favorable terms is advisable based on current trends.
Federal Reserve Economic Trends
As of August 20, 2026, the Breakeven Inflation Rate for 10 years stands at 2.300%, signaling stable inflation expectations which influence mortgage rates and the overall cost of borrowing. Recently, the Mortgage 30Yr Average Rates dropped significantly by 6.67 points over the past week, reflecting heightened volatility in the housing market. Conversely, the Mortgage 30Yr Usda Average Rates increased by 0.14 points in the last month, indicating a slight upward trend for borrowers seeking USDA loans. The current lowest mortgage rate is observed at 5.950% for 15-year fixed mortgages. Borrowers should remain vigilant of these shifts as they navigate financing options in a changing economic landscape.
LendMesh
Every mortgage journey is unique, and so is every buyer’s story. Maybe you’re navigating the process for the first time, or maybe you’re a seasoned homeowner looking for a smarter refinance. Either way, LendMesh is here for you. We’re proud to partner with institutions big and small, from household-name banks to community credit unions who know your local market inside and out. Our expert-written guides and side-by-side comparisons mean you always have the information you need, without the hassle or guesswork. Want to see what’s out there? Visit our Mortgage Loans page: https://www.lendmesh.com/loans/mortgage_loans . At LendMesh, homebuying doesn’t have to be complicated—it can even be inspiring.
Customers Also Interested In
Conclusion
As you weigh your options today, remember even small changes in rates can add up over time. The difference between a 5.125% and 6.625% mortgage rate might seem minor but could mean hundreds extra each month or tens of thousands over the loan’s life. Given the recent uptick in inflation expectations and some credit unions raising jumbo loan rates, locking in a competitive fixed rate now could provide stability against future increases. For buyers and refinancers alike, focusing on loan terms and points alongside rates will help tailor the best deal to your financial goals. Stay informed about market trends and consult with your lender to understand how these shifts affect your unique situation before making decisions that last decades.