Prorated Charge Calculator
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Prorated Charge Calculator
If your company charges for service on a subscription basis, the addition of new services can require some proration math. Figuring out how much just a portion of a monthly or annual subscription remains, and then calculating the cost can be complicated.
This calculator is available anywhere and lets you figure out a prorated charge with a few simple inputs. It supports contracts of any length, with service being billed either on a per-license or a flat fee basis.
Prorated charge calculator
{note: trim=yes}
{formtoggle: name=per license; default=yes}{formtoggle: name=flat fee; default=no}{endnote}
{if: `per license` AND `flat fee`} {error: You can only select one type at a time; block=yes}{elseif: not `per license` and not `flat fee`}{error: Select charge type; block=yes}{elseif: `per license`}{note}1) Enter number of licenses being added: {formtext: name=new licenses}
2) Enter the full annual cost per license: {formtext: default=120; name=cost per license}
3) Enter date new licenses available: {formdate: YYYY-MM-DD; name=newstartdate}
4) Enter the end-date of their current annual term: {formdate: YYYY-MM-DD; name=enddate}{chargeamount=(((`cost per license`/365)*(datetimediff(newstartdate, enddate, "D")))*`new licenses`)}{endnote} {if: chargeamount<0}{error: End date must be after the date new licenses are available; block=yes}{else} {note: trim=left} Prorated amount to charge the customer: {endnote}{=chargeamount; format=$.2f}{endif} {elseif: `flat fee`}{note}1) Enter the full annual cost of the new service being added: {formtext: name=annual cost}
2) Enter the date the new service is being added: {formdate: YYYY-MM-DD; name=newstartdate}
3) Enter the end-date of their current annual term: {formdate: YYYY-MM-DD; name=enddate}{chargeamount=(`annual cost`/365)*datetimediff(newstartdate, enddate, "D")}{endnote}{if: chargeamount<0}{error: End date must be after the date new service is being added; block=yes}{else} {note: trim=left} Prorated amount to charge the customer: {endnote}{=chargeamount; format=$.2f}{endif} {endif}
2) Enter the full annual cost per license: {formtext: default=120; name=cost per license}
3) Enter date new licenses available: {formdate: YYYY-MM-DD; name=newstartdate}
4) Enter the end-date of their current annual term: {formdate: YYYY-MM-DD; name=enddate}{chargeamount=(((`cost per license`/365)*(datetimediff(newstartdate, enddate, "D")))*`new licenses`)}{endnote} {if: chargeamount<0}{error: End date must be after the date new licenses are available; block=yes}{else} {note: trim=left} Prorated amount to charge the customer: {endnote}{=chargeamount; format=$.2f}{endif} {elseif: `flat fee`}{note}1) Enter the full annual cost of the new service being added: {formtext: name=annual cost}
2) Enter the date the new service is being added: {formdate: YYYY-MM-DD; name=newstartdate}
3) Enter the end-date of their current annual term: {formdate: YYYY-MM-DD; name=enddate}{chargeamount=(`annual cost`/365)*datetimediff(newstartdate, enddate, "D")}{endnote}{if: chargeamount<0}{error: End date must be after the date new service is being added; block=yes}{else} {note: trim=left} Prorated amount to charge the customer: {endnote}{=chargeamount; format=$.2f}{endif} {endif}
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