Does anyone have suggestions for raising funds to inject into any already profitable consumer installment loan finance business?

Talk to yield street.

Yieldstreet has structured and financed various non traditional deal like:
-Business receivables
-legal finance
-marine finance
-debt and equity RE deals
- mezzanine financing
- Art finance
- Motorcycle loans

So they can handle whatever you throw at them.

I have been investing through them for my passive income portfolio.

Money is the bloodline of any business. The long painstaking yet exciting journey from the idea to revenue generating business needs a fuel named capital. Now, when would you require funding depends largely on the nature and type of the business. Some of these funding options are for Indian business, however, similar alternatives are available in different countries.
1. Bootstrapping your startup business
When you have your own money, you are tied to business. Some businesses need money right from the day-1 and for such businesses, bootstrapping may not be a good option. Bootstrapping is also about stretching resources – both financial and otherwise – as far as they can. Check out these 30 tips to save money and improve your business cashflow.

2. Crowdfunding as A Funding Option
This is how crowdfunding works – An entrepreneur will put up a detailed description of his business on a crowdfunding platform. He will mention the goals of his business, plans for making a profit, how much funding he needs and for what reasons, etc. and then consumers can read about the business and give money if they like the idea.

3. Get Angel Investment In Your Start-up
They prefer to take more risks in investment for higher returns. Angel Investment as a funding option has its shortcomings too. Angel investors invest lesser amounts than venture capitalists. Here is a list of popular Angel Investors in India – Indian Angel Network, Mumbai Angels, Hyderabad Angels. Also check out the list of individual Angel Investors in India, some of these active angel investors have invested in many successful start-ups.

4. Get Funding from Business Incubators & Accelerators
Early stage businesses can consider Incubator and Accelerator programs as a funding option. Found in almost every major city, these programs assist hundreds of startup businesses every year. In India, popular names are Amity Innovation Incubator, AngelPrime, CIIE, IAN Business Incubator, Villgro, Startup Village and TLabs. Popular business accounting software – ProfitBooks is also a part of Washington based accelerator Village Capital.

5. Funds by Winning Contests
It encourages entrepreneurs with business ideas to set up their own businesses. In such competitions, you either must build a product or prepare a business plan. We, at ProfitBooks benefitted a lot when we were regional finalists in Microsoft BizSparks in 2013 and won Hot100 Start-up Award in 2014. You can either present your idea in person or pitch it through a business plan. Check out the latest start-up programs & contests in your area. Here is a calendar of various Business Plan competitions.

6. Raise Money Through Bank Loans
Funding from bank would involve the usual process of sharing the business plan and the valuation details, along with the project report, based on which the loan is sanctioned. Learn how to get working capital loans in India. In US, sites like Kabbage can help you get working capital loan online in minutes. Unlike traditional lenders, Kabbage approve small business loans by looking at real-life data, not just a credit score.
Besides if you do have any questions give me a call: https://clarity.fm/joy-brotonath

I help increase sales through customer success. Implicit is analyzing business strategies.

If you have been turned down, likely your investor pitch needs strengthening. Your business is profitable but may need stronger articulation of risk mitigation and competitive edge, to give investors comfort. If you look at learnings from rejections closely they may give clues on what to strengthen. I felt you need to do a rigorous failure analyses. Let me know if I can help here.

All the best.

OK! You want to increase the amount of $$ you have "on the street." Are you a brick-n-mortar? Online Lender? Blended? You use proprietary loan management software or something off-the-shelf such as Infinity, eCheckTrak, Epic... You are a State licensed lender? Which State(s). [As you likely know, Illinois and Nebraska just "went dark."] Perhaps you're employing the Tribal Model? Are you beyond a "friends & family" seed fund? The ROI on "the business of lending to the masses" can be superior. Make some noise. I've no clue how much $$ you're attempting to raise. But at a minimum, let everyone in your network know about your biz. How well it's performing. Avg. installment loans are 400%+ APR's! Are you giving equity? Debt? Jer Ayles. Call me. Plenty of capital looking for returns you're capable of delivering.