Interest

Interest earns a percent of cash kept on hand at the end of wave.

Use

Once unlocked, player will receive interest upon finishing a wave based on the amount of Cash available. $ sign next to the cash will turn green when interest reached its maximum and further saving of cash will not increase it.

Interest is calculated after Cash Per Wave. To find interest:

(Current Cash + Cash/Wave * Cash Bonus) * Interest/Wave %.

Interest is considered as one of the most useless stats by the gaming community.

If you wish to increase your interest per wave, you can invest a bit into it's Max Interest Labs while its cheap and fast, but it's not recommended to go heavy on it.

Workshop

Interest/Wave unlocked in Workshop for 5000 coins after Free Upgrades. There are 99 levels with a base of 0%. Each level increases the base by 0.06% for a maximum value by 5.94%.

Level	Value	Coin	Total Coins
1	0.06%	125	125
2	0.12%	179	304
3	0.18%	245	549
4	0.24%	328	877
5	0.30%	431	1.31K
6	0.36%	556	1.86K
7	0.42%	705	2.57K
8	0.48%	881	3.45K
9	0.54%	1.08K	4.53K
10	0.60%	1.32K	5.85K
11	0.66%	1.58K	7.43K
12	0.72%	1.88K	9.31K
13	0.78%	2.20K	11.51K
14	0.84%	2.57K	14.08K
15	0.90%	2.97K	17.04K
16	0.96%	3.40K	20.44K
17	1.02%	3.87K	24.32K
18	1.08%	4.39K	28.70K
19	1.14%	4.94K	33.64K
20	1.20%	5.53K	39.17K
21	1.26%	6.16K	45.33K
22	1.32%	6.84K	52.17K
23	1.38%	7.56K	59.73K
24	1.44%	8.32K	68.05K
25	1.50%	9.13K	77.18K
26	1.56%	9.98K	87.16K
27	1.62%	10.88K	98.04K
28	1.68%	11.83K	109.87K
29	1.74%	12.82K	122.69K
30	1.80%	13.87K	136.56K
31	1.86%	14.96K	151.51K
32	1.92%	16.10K	167.61K
33	1.98%	17.29K	184.90K
34	2.04%	18.53K	203.43K
35	2.10%	19.83K	223.26K
36	2.16%	21.18K	244.44K
37	2.22%	22.58K	267.01K
38	2.28%	24.03K	291.04K
39	2.34%	25.54K	316.57K
40	2.40%	27.10K	343.67K
41	2.46%	28.72K	372.39K
42	2.52%	30.39K	402.78K
43	2.58%	32.12K	434.90K
44	2.64%	33.91K	468.80K
45	2.70%	35.75K	504.55K
46	2.76%	37.65K	542.20K
47	2.82%	39.61K	581.82K
48	2.88%	41.63K	623.45K
49	2.94%	43.71K	667.16K
50	3.00%	45.85K	713.01K
51	3.06%	49.49K	762.51K
52	3.12%	51.82K	814.33K
53	3.18%	54.21K	868.54K
54	3.24%	56.67K	925.21K
55	3.30%	59.19K	984.41K
56	3.36%	61.78K	1.05M
57	3.42%	64.43K	1.11M
58	3.48%	67.14K	1.18M
59	3.54%	69.93K	1.25M
60	3.60%	72.78K	1.32M
61	3.66%	75.69K	1.40M
62	3.72%	78.68K	1.47M
63	3.78%	81.73K	1.56M
64	3.84%	84.85K	1.64M
65	3.90%	88.04K	1.73M
66	3.96%	91.30K	1.82M
67	4.02%	94.63K	1.92M
68	4.08%	98.03K	2.01M
69	4.14%	101.50K	2.11M
70	4.20%	105.04K	2.22M
71	4.26%	108.65K	2.33M
72	4.32%	112.34K	2.44M
73	4.38%	116.10K	2.56M
74	4.44%	119.92K	2.68M
75	4.50%	123.83K	2.80M
76	4.56%	134.19K	2.93M
77	4.62%	138.45K	3.07M
78	4.68%	142.78K	3.22M
79	4.74%	147.19K	3.36M
80	4.80%	151.68K	3.52M
81	4.86%	156.25K	3.67M
82	4.92%	160.89K	3.83M
83	4.98%	165.62K	4.00M
84	5.04%	170.43K	4.17M
85	5.10%	175.32K	4.34M
86	5.16%	180.29K	4.52M
87	5.22%	185.34K	4.71M
88	5.28%	190.47K	4.90M
89	5.34%	195.69K	5.10M
90	5.40%	200.99K	5.30M
91	5.46%	206.37K	5.50M
92	5.52%	211.84K	5.71M
93	5.58%	217.39K	5.93M
94	5.64%	223.02K	6.15M
95	5.70%	228.74K	6.38M
96	5.76%	234.54K	6.62M
97	5.82%	240.43K	6.86M
98	5.88%	246.41K	7.11M
99	5.94%	252.47K	7.36M

Labs

Interest

Lab Utility Research Unlocks at Tier 2 Wave 80 Milestone. Interest increases the increments of each interest/wave workshop level and the maximum workshop value. There are 99 levels.

Level	Time	Cost	Value
1	0d  0h  0m	50	1.02
2	0d  0h  9m	93	1.04
3	0d  0h 24m	221	1.06
4	0d  0h 45m	532	1.08
5	0d  1h 16m	1,130	1.10
6	0d  1h 58m	2,110	1.12
7	0d  2h 53m	3,590	1.14
8	0d  4h  2m	5,680	1.16
9	0d  5h 27m	8,480	1.18
10	0d  7h  8m	12,130	1.20
11	0d  9h  8m	16,720	1.22
12	0d 11h 27m	22,370	1.24
13	0d 14h  6m	29,210	1.26
14	0d 17h  7m	37,350	1.28
15	0d 20h 31m	46,920	1.30
16	1d  0h 18m	58,020	1.32
17	1d  4h 30m	70,790	1.34
18	1d  9h  7m	85,350	1.36
19	1d 14h 11m	101,820	1.38
20	1d 19h 43m	120,320	1.40
21	2d  1h 43m	140,980	1.42
22	2d  8h 12m	163,920	1.44
23	2d 15h 11m	189,270	1.46
24	2d 22h 41m	217,160	1.48
25	3d  6h 44m	247,710	1.50
26	3d 15h 19m	281,060	1.52
27	4d  0h 27m	317,320	1.54
28	4d 10h  9m	356,630	1.56
29	4d 20h 27m	399,120	1.58
30	5d  7h 21m	444,910	1.60
31	5d 18h 51m	494,150	1.62
32	6d  6h 58m	546,940	1.64
33	6d 19h 44m	603,440	1.66
34	7d  9h  8m	663,770	1.68
35	7d 23h 12m	728,060	1.70
36	8d 13h 56m	796,440	1.72
37	9d  5h 22m	869,050	1.74
38	9d 21h 29m	946,020	1.76
39	10d 14h 18m	1,030,000	1.78
40	11d  7h 50m	1,110,000	1.80
41	12d  2h  6m	1,200,000	1.82
42	12d 21h  6m	1,300,000	1.84
43	13d 16h 52m	1,400,000	1.86
44	14d 13h 23m	1,510,000	1.88
45	15d 10h 40m	1,620,000	1.90
46	16d  8h 45m	1,730,000	1.92
47	17d  7h 37m	1,860,000	1.94
48	18d  7h 17m	1,990,000	1.96
49	19d  7h 47m	2,120,000	1.98
50	20d  9h  5m	2,260,000	2.00
51	21d 11h 14m	2,400,000	2.02
52	22d 14h 14m	2,560,000	2.04
53	23d 18h  5m	2,720,000	2.06
54	24d 22h 48m	2,880,000	2.08
55	26d  4h 24m	3,050,000	2.10
56	27d 10h 52m	3,230,000	2.12
57	28d 18h 15m	3,420,000	2.14
58	30d  2h 32m	3,610,000	2.16
59	31d 11h 43m	3,810,000	2.18
60	32d 21h 50m	4,020,000	2.20
61	34d  8h 54m	4,230,000	2.22
62	35d 20h 53m	4,450,000	2.24
63	37d  9h 50m	4,680,000	2.26
64	38d 23h 45m	4,920,000	2.28
65	40d 14h 38m	5,170,000	2.30
66	42d  6h 30m	5,420,000	2.32
67	43d 23h 21m	5,680,000	2.34
68	45d 17h 12m	5,960,000	2.36
69	47d 12h  4m	6,240,000	2.38
70	49d  7h 57m	6,520,000	2.40
71	51d  4h 51m	6,820,000	2.42
72	53d  2h 47m	7,130,000	2.44
73	55d  1h 46m	7,440,000	2.46
74	57d  1h 49m	7,770,000	2.48
75	59d  2h 55m	8,100,000	2.50
76	61d  5h  5m	8,450,000	2.52
77	63d  8h 19m	8,800,000	2.54
78	65d 12h 39m	9,170,000	2.56
79	67d 18h  5m	9,540,000	2.58
80	70d  0h 37m	9,920,000	2.60
81	72d  8h 16m	10,320,000	2.62
82	74d 17h  2m	10,720,000	2.64
83	77d  2h 56m	11,140,000	2.66
84	79d 13h 58m	11,570,000	2.68
85	82d  2h  9m	12,000,000	2.70
86	84d 15h 30m	12,450,000	2.72
87	87d  6h  0m	12,910,000	2.74
88	89d 21h 40m	13,380,000	2.76
89	92d 14h 31m	13,870,000	2.78
90	95d  8h 33m	14,360,000	2.80
91	98d  3h 47m	14,870,000	2.82
92	101d  0h 13m	15,380,000	2.84
93	103d 21h 52m	15,910,000	2.86
94	106d 20h 44m	16,460,000	2.88
95	109d 20h 50m	17,010,000	2.90
96	112d 22h 10m	17,580,000	2.92
97	116d  0h 44m	18,160,000	2.94
98	119d  4h 34m	18,750,000	2.96
99	122d  9h 39m	19,360,000	2.98

Max Interest

Lab Utility Research Unlocks at Tier 2 Wave 80 Milestone. Max Interest increases the maximum amount of interest you can receive (Starts at $50). There are 15 levels.

Level	Time	Cost	Value
1	0d  0h 41m	250	$100
2	0d  1h  9m	910	$200
3	0d  2h  8m	2,130	$350
4	0d  4h 33m	4,860	$500
5	0d  9h 42m	10,330	$700
6	0d 19h 11m	20,020	$1,000
7	1d 10h 50m	35,600	$1,500
8	2d 10h 43m	58,900	$2,000
9	3d 21h 10m	91,940	$2,500
10	5d 20h 39m	136,870	$3,500
11	8d 11h 54m	195,990	$5,000
12	11d 21h 48m	271,720	$7,500
13	16d  5h 25m	366,610	$10,000
14	21d 13h 39m	483,330	$12,500
15	28d  2h 55m	624,680	$15,000

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