Let's see if I understood.
From April 15 to May 16 is one month, therefore 6,000 are shown.
From April 15 to June 16 are 2 months therefore 9,000 are shown.
From April 15 to June 16 are 3 months, therefore, 14,000 are shown.
In the following example, you can simulate today's date in cell U13.
Tell me if the result in T15 is what you need?
<table border="1" cellspacing="0" style="font-family:Calibri,Arial; font-size:11pt; background-color:#ffffff; "> <colgroup><col style="font-weight:bold; width:30px; " /><col style="width:76.04px;" /><col style="width:18.06px;" /><col style="width:18.06px;" /><col style="width:18.06px;" /><col style="width:18.06px;" /><col style="width:18.06px;" /><col style="width:18.06px;" /><col style="width:33.27px;" /><col style="width:38.02px;" /><col style="width:33.27px;" /><col style="width:38.02px;" /><col style="width:33.27px;" /><col style="width:38.02px;" /><col style="width:20.91px;" /><col style="width:20.91px;" /><col style="width:20.91px;" /><col style="width:20.91px;" /><col style="width:20.91px;" /><col style="width:20.91px;" /><col style="width:76.04px;" /><col style="width:76.04px;" /><col style="width:125.47px;" /></colgroup><tr style="background-color:#cacaca; text-align:center; font-weight:bold; font-size:8pt; "><td > </td><td >A</td><td >B</td><td >C</td><td >D</td><td >E</td><td >F</td><td >G</td><td >H</td><td >I</td><td >J</td><td >K</td><td >L</td><td >M</td><td >N</td><td >O</td><td >P</td><td >Q</td><td >R</td><td >S</td><td >T</td><td >U</td><td >V</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >1</td><td > </td><td style="background-color:#92d050; "> </td><td style="background-color:#92d050; "> </td><td style="background-color:#92d050; "> </td><td style="background-color:#92d050; "> </td><td style="background-color:#92d050; "> </td><td style="background-color:#92d050; "> </td><td style="background-color:#92d050; "> </td><td style="background-color:#92d050; "> </td><td style="background-color:#92d050; "> </td><td style="background-color:#92d050; "> </td><td style="background-color:#92d050; "> </td><td style="background-color:#92d050; "> </td><td style="background-color:#92d050; "> </td><td style="background-color:#92d050; "> </td><td style="background-color:#92d050; "> </td><td style="background-color:#92d050; "> </td><td style="background-color:#92d050; "> </td><td style="background-color:#92d050; "> </td><td > </td><td > </td><td > </td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >2</td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td >Today</td><td > </td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >13</td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td style="text-align:right; ">16-jun</td><td ><--- Date Simulation</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >14</td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >15</td><td style="text-align:right; ">15-abr</td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td style="text-align:right; ">6000</td><td >1 of 3</td><td style="text-align:right; ">3000</td><td >2 of 3</td><td style="text-align:right; ">5000</td><td >3 of 3</td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td style="background-color:#ffff00; text-align:right; "> 9,000.00 </td><td > </td><td > </td></tr></table><br /><table style="font-family:Arial; font-size:10pt; border-style: groove ;border-color:#00ff00;background-color:#fffcf9; color:#000000; "><tr><td ><b></b></td></tr><tr><td ><table border = "1" cellspacing="0" cellpadding="2" style="font-family:Arial; font-size:9pt;"><tr style="background-color:#cacaca; font-size:10pt;"><td >Cell</td><td >Array Formula</td></tr><tr><td >T15</td><td >{=SUM(OFFSET(A15,0,1,,SMALL(IF(--ISNUMBER(B15:S15),COLUMN(B15:S15)),DATEDIF(A15,U13,"m"))))}</td></tr></table></td></tr></table>
Array formulas
Entered with Ctrl+Shift+Enter. If entered correctly, Excel will surround with curly braces {}.
Note: Do not try and enter the {} manually yourself