Black Friday is 3 days away. It’s the official start of the 2010 Holiday Shopping Season.

Sales are expected to top $111 billion this year and, already, businesses are vying for shoppers and their dollars. Newspaper circulars are getting larger, and in-store discounting is more prevalent.

But one discount that shoppers should think twice about is the popular “Open A Charge Card, Save 20%” promotion. The short-term savings may be tempting, but the long-term costs may be huge.

It’s because of how credit scores work.

According to myFICO.com, “new credit” accounts for 85 out of 850 possible credit scoring points, with new credit defined by such traits as:

• Number of recently opened accounts
• Number of recent credit inquiries
• Time since recent credit inquiries
• Proportion of new accounts to all accounts

These traits are negatives against a FICO score so with each new, in-store credit card application, a person’s credit score will fall. The fall will be especially pronounced for persons lacking credit “depth”, or who have made a disproportionately large number of new credit applications recently.

For soon-to-be homeowners, or would-be refinancers in Oak Park , credit scores are worth keeping high. This is because credit scores change the mortgage rates and/or loan fees for which an applicant is eligible.

As an illustration, assuming 20% equity on a $200,000 conforming loan:

• 740 FICO : No added loan costs
• 720 FICO : 0.250% increase in loan costs, or $500
• 700 FICO : 0.750% increase in loan costs, or $1,500
• 680 FICO : 1.500% increase in loan costs, or $3,000
• 660 FICO : 2.500% increase in loan costs, or $5,000

It’s expensive to have a low credit score — more expensive than the money saved by opening a card at the mall, anyway.

That said, if you know you won’t need your credit for a mortgage within the next 6 months, the risk of applying for in-store credit cards is likely small. But if you’ll need your FICO soon, consider paying for your gifts full price.

This week marks the start of the Refi Boom’s 7th month; rates have been falling since early-April 2010. Whether you’re looking to refinance or buy a home, however, know that not everyone will qualify for today’s low rates.

Mortgage approvals are primarily based on good income, good equity and strong credit, and, without all three, the best rates of the day remain out of reach. Now, you can’t always ask for a raise and equity is a function of the housing market, but you can do something about your credit score.

In this 4-minute segment from NBC’s The Today Show, you learn some credit basics to help propel your score higher:

• There’s no “quick fix” for credit. Time + Good Credit Behavior = Better FICOs.
• Pay every bill when it comes due. Even one late payment can damage your score.
• Don’t close old credit cards

Also among the segment’s advice is to stop worrying about whether rates have bottomed. Refinance today if it makes financial sense. Then, if, by chance, rates fall in the future, just refinance again.  Don’t be greedy, we’re told.

This week marks the start of the Refi Boom’s 7th month; rates have been falling since early-April 2010. Whether you’re looking to refinance or buy a home, however, know that not everyone will qualify for today’s low rates.

Mortgage approvals are primarily based on good income, good equity and strong credit, and, without all three, the best rates of the day remain out of reach. Now, you can’t always ask for a raise and equity is a function of the housing market, but you can do something about your credit score.

In this 4-minute segment from NBC’s The Today Show, you learn some credit basics to help propel your score higher:

• There’s no “quick fix” for credit. Time + Good Credit Behavior = Better FICOs.
• Pay every bill when it comes due. Even one late payment can damage your score.
• Don’t close old credit cards

Also among the segment’s advice is to stop worrying about whether rates have bottomed. Refinance today if it makes financial sense. Then, if, by chance, rates fall in the future, just refinance again.  Don’t be greedy, we’re told.

This week marks the start of the Refi Boom’s 7th month across Illinois ; rates have been falling since early-April 2010. Whether you’re looking to refinance or buy a home, however, know that not everyone will qualify for today’s low rates.

Mortgage approvals are primarily based on good income, good equity and strong credit, and, without all three, the best rates of the day remain out of reach. Now, you can’t always ask for a raise and equity is a function of the housing market, but you can do something about your credit score.

In this 4-minute segment from NBC’s The Today Show, you learn some credit basics to help propel your score higher:

• There’s no “quick fix” for credit. Time + Good Credit Behavior = Better FICOs.
• Pay every bill when it comes due. Even one late payment can damage your score.
• Don’t close old credit cards

Also among the segment’s advice is to stop worrying about whether rates have bottomed. Refinance today if it makes financial sense. Then, if, by chance, rates fall in the future, just refinance again.  Don’t be greedy, we’re told.

Credit scores are more important than ever and yet still not all that well understood.  Part of that is that the FICO model is a proprietary and highly valuable algorithm.  Much like Google’s search engine rankings, Fair Isaacs doesn’t ever publish the whole equation.

The various components of a credit score are outlined in the pie chart to the right.  Your payment history and current balances represent almost two-thirds of your score.

But what about the consequences of a mistake?  This look-up guide is something that I have never seen before. 

For example, here are a few credit mistakes and their likely impact on FICO score.  With loan level price adjustments (LLPA) directly relating your mortgage rate to your credit score, some of these changes can be mean more than a 1% fee on a loan. 

Max-Out A Credit Card

• 780 FICO: 25-45 point drop
• 680  FICO: 10-30 point drop

30-Day Delinquency

• 780 FICO: 90-110 point drop
• 680 FICO: 60-80 point drop

Foreclosure

• 780 FICO : 140-160 point drop
• 680 FICO : 85-105 point drop

With credit scores, the harder they come, the harder they fall.  The consequences of a foreclosure for a 780 FICO or 720 FICO ultimately has the impact of moving that formerly top tier credit score down into the same range as someone who started with a 680 FICO or 660 FICO.  

As always, remember that this is an extremely limited snapshot of two hypothetical credit scores.   The impact on your personal credit score may vary based on the whole profile going into the scoring model.

As mortgage lenders tighten approval standards   in Illinois and nationwide, the importance of a good credit score is rising.  Credit scores not only make the difference between a mortgage approval and mortgage turn-down, but they also play a large role in determining your actual mortgage note rate.

In the 3-minute piece, the NBC Today Show talks about 7 ways that homebuyers ruin their credit — often by accident.  Some of the highlighted mistakes include:

• Closing open credit cards
• Making appliance buys on credit prior to closing
• Asking creditors to lower credit balances prior to closing

In general, a 740 FICO will insulate a borrower from the higher costs and/or rates associated with low credit scores.  Below 740, though, every 20 points adds to the damage.  Watch the video and apply what you can to your own situation.  The more you know, the more you can save.