Executive Employment Offer Letter between Digital Insight Corporation and Paul Pucino

Exhibit 10.1

[Digital Insight Corporation Letterhead]

December 8, 2004

Paul Pucino

9867 Gloucester Dr

Beverly Hills, CA 90210

Dear Paul:

We are pleased to offer you the position of Executive Vice President & Chief Financial Officer with Digital Insight Corporation (the “Company” or “Digital Insight”). I couldn’t be more pleased that we will be working together and am eagerly looking forward to your arrival. I know that you are working through the question of start date which we should discuss when you have a good sense of when that is likely to be. In any case, I’ll assume it will be no later than January 31, 2005 and, hopefully, earlier.

In your capacity as EVP/CFO, you will report directly to me. You will be classified as an exempt, full time employee and receive an annual salary of $300, 000, which will be paid in accordance with the Company’s normal pay procedures. Additionally, commencing on your hire date, you will be eligible to participate in the Company’s Executive Incentive Program with targeted bonus compensation equal to 70% of your annual salary subject to the terms and conditions of the program. For performance in 2005 and 2006, the bonus award will have a minimum guarantee of $150,000. The amount of the bonus award above $150,000 for 2005 and 2006 and for the entire bonus award from 2007 forward is subject to the sole discretion of the Company, based upon performance targets for you and/or the Company. Also, Digital Insight will provide you with a sign-on bonus of $125,000 to be paid with the first full payroll cycle following your date of hire.

Subject to Board approval, you will be granted a stock option to purchase 250,000 shares of Digital Insight Common Stock. The exercise price of the option will be the fair market value on your start date, which is equal to the Nasdaq closing price of the Company’s stock on the previous trading day. The shares underlying the option will vest over a 48-month period with 25% vesting 12 months after your date of hire and 1/48^th of the total grant vesting monthly thereafter. The stock option grant is subject to the standard terms and conditions of the Company’s stock option plan and will be documented separately by the Company’s standard stock option agreement.

Additionally, subject to your performance and approval of the Board, you will be entitled to participate in the Company’s annual “follow-on” option program commencing in January 2006. Your annual options will be in the range of 30,000 to 50,000 options.

Following a “Change in Control” of the Company, in the event of a termination other than for “Cause,” subject to your execution and delivery of a release in form acceptable to the Company you will receive (i) an amount equal to 18 months base salary plus 18 months equivalent bonus; and (ii) 100% vesting acceleration of the remaining unvested shares underlying your option as of the termination date.

As used in this letter, termination for “Cause” means a termination of service, based upon a finding by the Company, acting in good faith and based on its reasonable belief at the time, that you:

A termination for Cause will be deemed to occur (subject to reinstatement upon a contrary final determination by the Board) on the date when the Company first delivers notice to you of a decision to invoke a termination for Cause and will be final in all respects on the date final written notice of a termination for Cause is delivered to you.

For the above purposes, a termination by the Company other than for Cause includes a termination of employment by you within 30 days following the assignment of any duties to you which is materially inconsistent with, or reflecting a materially adverse change in, your position, duties, responsibilities or status with the Company; provided you shall have first notified the Company in writing describing the event(s) which constitute such termination right and the Company failed to cure such event(s) within 30 days after receipt of such written notice.

As used in this offer letter, a “Change in Control” means any of the following transactions to which the Company is a party:

You will be eligible to receive Company benefits enjoyed by all Digital Insight employees in accordance with the eligibility terms and conditions of these programs. As an executive of the Company you will be exempt from the normal limits on paid time off that are defined in the Employee Handbook, and the Company will not accrue paid time off for you. It is expected that you will take paid time off as needed and at your discretion, subject only to the approval of your supervisor. Participation in the Company’s AXIS.ABLE Flex Benefits program will be effective on the first of the month following 30 days of employment. These programs will be reviewed with you in detail during your new hire orientation.

As a condition of your employment with Digital Insight, you will be required to sign an employee Nondisclosure Agreement which requires, among other provisions, the assignment of patent and other intellectual property rights to any invention made during your employment at the Company and non-disclosure of proprietary information. You agree that, during the term of your employment with the Company, you will not engage in any other employment, occupation, consulting or other business activity directly related to the business in which the Company is now involved or becomes involved during the term of your employment, nor will you engage in any other activities that conflict with your obligations to the Company. As an employee of the Company, you will also be expected to abide by other Company rules, regulations and policies and acknowledge in writing that you have read and agree to abide by the Company’s Employee Handbook and the Code of Ethics and Business Conduct (once they have been made available to you). Employment is also conditioned upon satisfactory results from a background investigation.

For purposes of federal immigration law, you will be required to provide proof of eligibility to work in the United States. Such documentation must be provided to us within three (3) business days of your date of hire, or the Company’s employment relationship with you may be terminated.

It is understood that employment is at the mutual consent of the employee and the Company. Accordingly, either the employee or the Company can terminate the employment relationship at will, at any time, with or without cause or advance notice, and without further obligation except as defined in this letter.

For clarification and the protection of both you and the Company, this letter represents the sole agreement between you and Digital Insight. It constitutes and expresses the entire agreement regarding your employment. Any previous promises, representations or understanding relative to any terms and conditions are not to be considered as part of this offer unless expressed here in writing. This letter may not be modified or amended except by a written agreement, signed by you and the Chairman, President, and Chief Executive Officer.

Again, I, the management team, and Board are really looking forward to working together. Don’t hesitate to call if you have any questions.

To accept this offer, please sign and date this letter below and return it to me via fax at ###-###-####.

I am delighted to extend this offer to you, and look forward to working with you at Digital Insight.

Very truly yours,

DIGITAL INSIGHT CORP.

Chairman, President, and Chief Executive Officer