Hi
The following are calculations taken $$ as reference
Bitmain_AntMiner_S7_4860_GH/s                        
Exchange Rate 1BTC = $329.28                        
Difficulty increment 2.96%                        
Miner Cost $2,290                        
Hashrate 4,860 Gigahash per second                        
Electricity cost per day $2.78                        
Estimate start mining date Nov-14-2015                        
                        
During   Bitcoin per day   Revenue per day   Income per day   difficulty   total day   total BTC   total Income   amount to break even
Nov-14-15 - Nov-23-15   0.0371 BTC   $12.22    $9.44    65,848,255,180   10 days   0.37BTC   $94.38    ($2,195.62)
Nov-24-15 - Dec-07-15   0.0361 BTC   $11.87    $9.09    67,797,363,533   24 days   0.88BTC   $221.60    ($2,068.40)
Dec-08-15 - Dec-21-15   0.035 BTC   $11.53    $8.75    69,804,165,494   38 days   1.37BTC   $344.04    ($1,945.96)
Dec-22-15 - Jan-04-16           0.034 BTC   $11.20    $8.41    71,870,368,793   52 days   1.84BTC   $461.84    ($1,828.16)
Jan-05-16 - Jan-18-16           0.033 BTC   $10.88    $8.09    73,997,731,709   66 days   2.3BTC   $575.13    ($1,714.87)
Jan-19-16 - Feb-01-16           0.0321 BTC   $10.56    $7.78    76,188,064,567   80 days   2.75BTC   $684.04    ($1,605.96)
Feb-02-16 - Feb-15-16           0.0312 BTC   $10.26    $7.48    78,443,231,279   94 days   3.19BTC   $788.70    ($1,501.30)
Feb-16-16 - Feb-29-16           0.0303 BTC   $9.96    $7.18    80,765,150,924   108 days   3.61BTC   $889.23    ($1,400.77)
Mar-01-16 - Mar-14-16           0.0294 BTC   $9.68    $6.89    83,155,799,392   122 days   4.03BTC   $985.75    ($1,304.25)
Mar-15-16 - Mar-28-16           0.0285 BTC   $9.40    $6.62    85,617,211,054   136 days   4.42BTC   $1,078.38    ($1,211.62)
Mar-29-16 - Apr-11-16           0.0277 BTC   $9.13    $6.35    88,151,480,501   150 days   4.81BTC   $1,167.22    ($1,122.78)
Apr-12-16 - Apr-25-16           0.0269 BTC   $8.87    $6.08    90,760,764,324   164 days   5.19BTC   $1,252.39    ($1,037.61)
Apr-26-16 - May-09-16           0.0262 BTC   $8.61    $5.83    93,447,282,948   178 days   5.56BTC   $1,333.99    ($956.01)
May-10-16 - May-23-16   0.0254 BTC   $8.36    $5.58    96,213,322,523   192 days   5.91BTC   $1,412.12    ($877.88)
May-24-16 - Jun-06-16   0.0247 BTC   $8.12    $5.34    99,061,236,870   206 days   6.26BTC   $1,486.89    ($803.11)
Jun-07-16 - Jun-20-16   0.024 BTC   $7.89    $5.11    101,993,449,481   220 days   6.59BTC   $1,558.38    ($731.62)
Jun-21-16 - Jul-04-16   0.0233 BTC   $7.66    $4.88    105,012,455,586   234 days   6.92BTC   $1,626.70    ($663.30)
Jul-05-16 - Jul-18-16   0.0226 BTC   $7.44    $4.66    108,120,824,271   248 days   7.24BTC   $1,691.94    ($598.06)
Jul-19-16 - Aug-01-16   0.022 BTC   $7.23    $4.45    111,321,200,669   262 days   7.54BTC   $1,754.18    ($535.82)
Aug-02-16 - Aug-15-16   0.0213 BTC   $7.02    $4.24    114,616,308,209   276 days   7.84BTC   $1,813.51    ($476.49)
Aug-16-16 - Aug-29-16   0.0207 BTC   $6.82    $4.04    118,008,950,932   290 days   8.13BTC   $1,870.01    ($419.99)
Aug-30-16 - Sep-12-16   0.0201 BTC   $6.62    $3.84    121,502,015,880   304 days   8.41BTC   $1,923.77    ($366.23)
Sep-13-16 - Sep-26-16   0.0195 BTC   $6.43    $3.65    125,098,475,550   318 days   8.69BTC   $1,974.86    ($315.14)
Sep-27-16 - Oct-10-16   0.019 BTC   $6.25    $3.46    128,801,390,426   332 days   8.95BTC   $2,023.36    ($266.64)
Oct-11-16 - Oct-24-16   0.0184 BTC   $6.07    $3.28    132,613,911,583   346 days   9.21BTC   $2,069.35    ($220.65)
Oct-25-16 - Nov-07-16   0.0179 BTC   $5.89    $3.11    136,539,283,366   360 days   9.46BTC   $2,112.90    ($177.10)
Nov-08-16 - Nov-21-16   0.0174 BTC   $5.72    $2.94    140,580,846,153   374 days   9.7BTC   $2,154.07    ($135.93)
Nov-22-16 - Nov-23-16   0.0169 BTC   $5.56    $2.78    144,742,039,199   376 days   9.74BTC   $2,159.62    ($130.38)