If one spouse wants to use the house as collateral for a charitable donation during the divorce, it can be a complex and potentially contentious issue. Here are some considerations:

1. Joint ownership: If both spouses own the house together, both may be required to sign the charitable donation agreement, making them both responsible for the loan.

2. Community property: In community property states, both spouses may be responsible for debts incurred during the marriage, regardless of who donates the property.

3. Divorce agreement: The divorce settlement agreement may need to be amended to reflect the charitable donation and the spouse's responsibility for the loan.

4. Court approval: The court may need to approve the charitable donation, especially if there are concerns about the impact on the marital estate or child support.

5. Tax implications: Charitable donations can have tax implications, and both spouses should consult a tax professional to understand the impact on their individual tax situations.

6. Appraisal: The value of the house may need to be appraised to determine its value for the charitable donation.

7. Spousal consent: Both spouses may need to provide consent for the charitable donation, depending on the loan terms and the divorce agreement.

8. Legal and financial advice: Both spouses should seek legal and financial advice to understand the implications of using the house as collateral for a charitable donation during the divorce.

To navigate this situation, consider:

1. Consulting with a divorce attorney and financial advisor.

2. Carefully reviewing the charitable donation agreement and loan terms.

3. Negotiating the terms of the charitable donation and divorce agreement.

4. Ensuring both spouses understand the risks and responsibilities involved.

5. Considering alternative charitable donation options that don't involve the marital home.