Hyperstake is a good option . I think it has 600 - 700 % per annum
Hyperstake is a good example, it has a 750% interest rate per year, but you will only earn ~68.43% this year and it will decline yearly.
It has a Max Cap and High Difficulty so that 750% will never be achieved.
Reference Hyperstake Forum =>
https://bitcointalk.org/index.php?topic=678849.msg7695761#msg7695761 X11 PoW Finished
Proof of Stake Blocks Only
90 Second Block Time
Minimum Age - 8.8 days (rounded)
Maximum Age - 30 days
Annual Stake Rate - up to 750% (see hyp.presstab.pw for avg paid rate)
Maximum Stake Subsidy - 1,000 HYP
Recommended Block Size - 4,500-20,000 HYP (see tutorial for splitting blocks)
BLOCKS LESS THAN 4500 HYP WILL TAKE MUCH LONGER TO STAKE BECAUSE OF HIGH DIFFICULTY
For small blocks, consider joining our staking pool, HyperPool
How Does Inflation Control Work?
Inflation control limits the maximum amount you can stake to 1,000 HYP for each block. This means that you will want to split your HYP blocks into the appropriate amount of HYP if you want to receive 750% reward, or else you will have your reward capped at 1,000 HYP. Reward is calculated by the following formula:
Code: Reward = min(HYPamount * (7.5/365) * daysToStake, 1,000)
Many of us have come to the conclusion that with such high difficulty, it is worth using bigger block size that will definitely hit max reward of 1,000, but will stake faster because of large size. See the splitting blocks tutorial for assistance. Also visit the inflation control wiki page and the inflation prediction website.
You actually will only get
HyperStake Supply Stats
Current total supply: 512 075 868
Total supply in:
(Based on the daily max generation of 960 000 HYP)
1 year from now: 862 475 868 (68.43% yearly gain)
2 years from now: 1 212 875 868 (40.63% yearly gain)
3 years from now: 1 563 275 868 (28.89% yearly gain)
4 years from now: 1 913 675 868 (22.41% yearly gain)
5 years from now: 2 264 075 868 (18.31% yearly gain)
Reference => http://hypsupply.ml/