Calculator: How Large a Line of Credit Can I Obtain?

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To calculate the maximum home equity line of credit you can obtain, find the maximum combined loan-to-value (CLTV) ratio the lender will consider. Loans are the sum of the amount of the proposed credit line plus the balance of any outstanding mortgage debt. Value is usually appraisal value, which is an independent appraiser's assessment of the home's current market value. A lender willing to consider a CLTV of 75% will offer a credit line amount that - added to any other mortgage debt - equals 75% of the home's appraisal value.