W-9 Form:
https://www.irs.gov/pub/irs-pdf/fw9.pdf
1040 Form:
https://www.irs.gov/pub/irs-pdf/f1040.pdf
W-4 Form:
https://www.irs.gov/pub/irs-pdf/fw4.pdf
1040-ES Form:
https://www.irs.gov/pub/irs-pdf/f1040es.pdf
4506-T Form:
https://www.irs.gov/pub/irs-pdf/f4506t.pdf
941 Form:
https://www.irs.gov/pub/irs-pdf/f941.pdf
W-2 Form:
https://www.irs.gov/pub/irs-pdf/fw2.pdf
9465 Form:
https://www.irs.gov/pub/irs-pdf/i9465.pdf
SS-4 Form:
https://www.irs.gov/pub/irs-pdf/fss4.pdf
W-7 Form:
https://www.irs.gov/pub/irs-pdf/fw7.pdf
For more information visit: https://www.irs.gov/forms-instructions