When it comes to investing in real estate, choosing the right home purchase loan is crucial for maximizing your returns and minimizing risks. In the US, various financing options are available for investment properties, each catering to different financial situations and investment strategies.

1. Conventional Loans
Conventional loans are a popular choice for many real estate investors. These loans are not backed by the government and typically require a higher credit score and down payment compared to government-insured loans. Generally, a 20% down payment is standard for investment properties, which can lead to lower monthly payments and better interest rates. Conventional loans are ideal for buyers with strong financial profiles seeking long-term financing.

2. FHA Loans
The Federal Housing Administration (FHA) offers loans that could be a suitable option for those looking to purchase multi-unit properties. FHA loans allow for a down payment as low as 3.5% if the investor plans to occupy one of the units. While FHA loans are primarily intended for primary residences, they can be used for investment properties if you live in one of the units. Keep in mind, however, the limitations on the number of properties you can finance under this program.

3. VA Loans
The Department of Veterans Affairs (VA) provides loans that are a fantastic option for veterans and active military members. Like FHA loans, VA loans can be used for multi-unit properties if the buyer occupies one of the units. VA loans typically require no down payment, have competitive interest rates, and do not require private mortgage insurance (PMI), making them an attractive option for eligible investors.

4. Hard Money Loans
For those who may not qualify for traditional financing, hard money loans provide a viable alternative. These short-term loans are secured by the property itself, rather than the borrower’s creditworthiness. While they come with higher interest rates, hard money loans are beneficial for investors looking to flip properties quickly. They are often easier to obtain and can provide fast access to capital, making them a popular choice among seasoned investors.

5. Portfolio Loans
Portfolio loans are held by lenders instead of being sold on the secondary market, allowing them to set their terms. This flexibility makes portfolio loans a good choice for investors working with multiple properties or those who may have trouble qualifying for conventional loans. Lenders can cater these loans to fit the investor's specific needs, making them highly customizable.

6. Home Equity Lines of Credit (HELOC)
If you own an existing property, a HELOC can be an excellent way to tap into your home's equity to finance the purchase of investment properties. With a HELOC, you can borrow against the equity you’ve built up in your home, often at lower interest rates than other types of financing. This option allows for flexibility in funding various investments without needing to apply for a traditional loan.

Choosing the best home purchase loan for investment properties in the US depends on your individual financial situation, investment goals, and risk tolerance. Each loan type has its pros and cons, and understanding these can significantly impact your investment strategy. Be sure to explore multiple options and consult with a financial advisor to determine the best path for your real estate investment journey.