Calculators | Launch Calculator. mortgages are compounded monthly. Loans | Save money with Oklahoma's Credit Union mortgage options. Services | OKCU has no control over the content of the site. Disclaimer // End -->. We have 7 home loan calculators for you to check out. Calculate Canadian and You can find answers to frequently asked questions about mortgages here. Linkedin Icon Youtube Icon Snapchat Icon. To help determine whether or not you qualify for a home mortgage based on income and expenses, visit the Mortgage Qualifier Tool. Adjustable rate mortgage calculator. Enter prepayment amounts to calculate their impact on your mortgage. Mortgage Refinance Calculator How long will it take to break even on a mortgage refinance? | Privacy Policy | Website Accessibility, Oklahoma's Credit Union (OKCU) offers great service and. Quickly see how much interest you could pay and your estimated principal balances.