The decision of whether to buy a business under a new LLC or under your current business depends on various factors such as liability protection, tax implications, and strategic considerations. Let's explore these aspects in detail:

1. Liability Protection:
- New LLC: Creating a new LLC for the acquisition of a business can provide a higher level of liability protection. If the acquired business has existing debts or legal issues, keeping it separate from your current business can shield your existing assets from potential risks.
- Current Business: Acquiring a business under your current business may expose your existing assets to potential liabilities associated with the acquired business. This could be a concern if the acquired business has significant financial or legal risks.

2. Tax Implications:
- New LLC: Setting up a new LLC allows for flexibility in structuring the tax implications of the acquisition. You can choose the most advantageous tax classification for the new entity, such as a single-member LLC taxed as a sole proprietorship or a multi-member LLC taxed as a partnership.
- Current Business: Acquiring a business under your current business may result in the same tax treatment as your existing business. This could be advantageous if your current business has favorable tax attributes, such as net operating losses that can be utilized to offset the acquired business's income.

3. Strategic Considerations:
- New LLC: Creating a new LLC can provide a fresh start and allow you to establish a separate brand identity for the acquired business. This can be beneficial if you want to maintain the acquired business as a distinct entity or if you plan to expand into a new market segment.
- Current Business: Acquiring a business under your current business can leverage existing synergies, resources, and customer bases. If the acquired business complements your current operations, integrating it into your existing business can lead to cost savings, economies of scale, and increased market share.

It is important to consult with legal, tax, and financial professionals to assess your specific circumstances before making a decision. They can provide personalized advice based on your goals, the nature of the acquired business, and the legal and tax implications involved.

References:
- Small Business Administration (SBA) - Buying a Business: https://www.sba.gov/business-guide/grow-your-business/buy-business
- Investopedia - Limited Liability Company (LLC): https://www.investopedia.com/terms/l/llc.asp