NEW YORK » Good news for those resolving to keep a close eye on their credit history in 2015: There’s no need to pay a dime to do so.

It’s never been easier for consumers to get a hold of their credit scores or credit reports for free. Major credit card issuers, including Discover and Capital One, offer cardholders a monthly look at their scores, which are used by lenders to gauge your financial health. And CreditKarma.com, CreditSesame.com and Quizzle. com offer free scores along with free credit reports, which detail any outstanding or past debts or any missed payments.

"As a consumer, the more options the better," says John Ulz­hei­mer, president of consumer education at CreditSesame.com. "For decades the only way to get these things was to buy it."

Making sure a score or report is correct is important. People with higher credit scores — they typically range from 300 to 850 — are offered lower interest rates for mortgages, credit cards and other loans. Those with low scores might not be able to take out a loan, rent a home or even be hired for a job, since some employers check credit scores, too, says Eleanor Blayney, a certified financial planner and a consumer advocate at the Certified Financial Planner Board of Standards.

If you check your score or credit report from more than one place, they will likely be slightly different. That’s normal, says Ulz­hei­mer. All credit scores are derived from one of the three credit reporting agencies: Equifax, Experian or TransUnion. Discover, for instance, lets its customers see their FICO score on its website and credit statement. (A FICO score is a brand of credit score developed by Fair Isaac Corp.) In Discover’s case the score is derived from a customer’s TransUnion credit report. Quizzle.com comes up with its score based on a customer’s Equifax report, CreditSesame.com uses Experian and CreditKarma. com uses both Equifax and TransUnion.

Formulations for coming up with a credit score are similar, so if you see a score that’s extremely different from the others, it’s a cause for concern, says Ulz­hei­mer. If that happens, check which credit report the company is using and pull up the report to see where the error is. Mistakes or fraud should be reported to the agency that issued the report.

Credit scores and reports change monthly, so checking on them more often than that is not necessary, says Ulz­hei­mer. At the very least, credit reports should be checked once a year, says Blayney. At AnnualCreditReport.com, reports from each of the three reporting agencies are available once every 12 months. You can stagger them, says Blayney, by looking at the Equifax report in the first month of the year and Experian a few months later, for example.

Some companies offering free credit scores and reports might also try to get you to sign up for credit monitoring services, which cost money and should be avoided, says Blayney: "That is a waste of money."