Money making methods solo?

Import/Export, Gunrunning, Crates, heists, Biker businesses, VIP works.

Client Jobs + VIP Work or Import/Export vehicle sales.

man just listen to this song
after it, there is no need for money because everything is fine : )

Client Jobs and 2X money this week, 60k in 5-6 minutes. It's like selling Import cars without the 20 minute cool down between them.

The best way I've found is:
1. Source I/E vehicle (remember to keep all cars and only sell top ends)
2. Buy CEO cargo (if you can only sell on your own, I recommend buying the smallest warehouse available since the chances of getting more than one vehicle is next to none)
3. (If a. You don't have a full cargo warehouse and b. The cooldown for selling vehicle cargo still exists) VIP Work Mission (if unable, source vehicle)
4. Sell Cargo if warehouse is full and your in a trustworthy lobby
5. Sell Vehicle (one car only unless you have friends and a collection)
6. If available, check supply on businesses (buy supply for all except Document Forgery) and sell if needed

This could, with careful use of cooldowns, get you $500k+ an hour but more realistically you'll get $300k an hour.

I've lived in the solo world for the last two years...

Motorcycle Club is alright... any of the businesses will profit (coke and meth are probably most profitable). The problem is when you get to selling, occasionally you get three trucks when selling a full amount and it's hard to sell all three in the 15 minute time frame, solo. So for these, stick to selling at 2 bubbles, the profit seems less but it's the same over time... only you shouldn't ever encounter a sell you can't handle.

Selling stolen cars in a Vehicle Warehouse can be done solo but the AI can be kind of hard on your profit margin. If you can get in a game with at least one other CEO (who isn't hassling you) then the AI won't show up and destroy your stuff. This is VERY profitable but kinda hard solo. A Cargobob can help this but that's a heck of an investment. It all is.

Where I would make most of my money was running two small warehouses of stolen goods from the CEO line... you can fill up both warehouses, alternating between them to eliminate the cooldown timer, doing 1 crate at a time because it's faster solo (sometimes you get multiple vehicles when running two or three crates)... it takes a lot of time but the profit margin is great. Selling off full 16 slot warehouses is like 250k or so... you can easily fill two warehouses and sell off in one afternoon session. Again, sometimes selling the full warehouse of 16 causes multiple sell deliveries which can be hard on the solo player. A trick here is to sell at 8 crates because this guarantees a single delivery vehicle.

All of these methods require investment.

If you don't want to spend, or can't...

Make a playlist of rockstar created missions. I put like 15 missions in one playlist. Things like the one where you steal coke at the pier. Or the three that have you blowing up cars in dealerships. Or stealing meth from the booze store in the desert. Those missions...

There is an internal timer to these missions that means the longer you stay in the mission, the bigger the payout. This maxes out at 15 minutes (or 12, I'm not sure). So to get the max payout, stay a whole 15 minutes in a mission before you turn it in. This will give you around 15-20k depending on the mission.

I don't that. I would play each mission as fast as possible which still pays out 7-9k, complete the entire playlist in a little over an hour, and take in nearly 200k... and I don't get bored watching a clock... also doing it in playlist mode gives you more RP and a few bonus dollars for "winning" the playlist, at the end.

If missions aren't your thing, you can do a playlist of races, the same way. Race against yourself. Finish the laps. Collect a few K each run (payout sucks solo, but it's something to do that does give you money). It's a good way to get paid to just drive, to learn the city and to learn some race maps. It's not incredibly profitable, but it adds up while doing what you enjoy doing. Again, the playlist is the way to go for the leveling up bonuses and the few extra dollars at the end.

Hope some of this helps.