By mail or fax to the IRS service center for the entity's state — there is no online filing. This produces the completed, signed PDF; the transmission is yours. Whether an electronic signature is acceptable on it is defined by the IRS's current e-signature policy, so check that before skipping ink.

What about a late election?

The form itself carries the representation lines used for late-election relief. Whether a client qualifies is tax advice — we produce the document, not the eligibility call.

Forms / IRS

Fill Form 2553 programmatically

Form 2553 — Election by a Small Business Corporation. Official IRS PDF, 4 pages, 100 fields read automatically.

Nearly every new S-corp starts with a 2553, and the clock is unforgiving — the election window opens and closes within months of formation. Formation platforms hold every answer the form wants the moment the company is created; what slows the filing down is assembling the document and chasing each shareholder for their consent line.

Official PDF at irs.gov

What you send

Real field names, straight from the PDF — the excerpt shows the first 5 of 100. The full list is in the table below, and the template hands you the complete JSON schema to copy.

{
  "data": {
    "topmostSubform[0].Page1[0].NameAddress[0].f1_01[0]": "string",
    "topmostSubform[0].Page1[0].NameAddress[0].f1_02[0]": "string",
    "topmostSubform[0].Page1[0].NameAddress[0].f1_03[0]": "string",
    "topmostSubform[0].Page1[0].f1_04[0]": "string",
    "topmostSubform[0].Page1[0].f1_05[0]": "string"
  }
}
// …plus 95 more fields, all listed below

What you get back

The completed Form 2553, streamed back as the response — or delivered to your webhook, HMAC-signed.

curl -X POST https://www.doc2api.co/api/v1/templates/<ID>/fill \
  -H "X-Api-Key: d2a_live_…" \
  -H "Content-Type: application/json" \
  -d @payload.json -o filled.pdf
# → the completed Form 2553 as a PDF.
#   With a webhook configured, the reply is JSON and the
#   document arrives at your endpoint as a signed URL.

Or skip the mapping entirely: embed the actual form on your site and let the person it belongs to fill and sign it — you receive the values as JSON and the finished PDF.

Every field on Form 2553

Extracted automatically from the official PDF — this table is generated by the same code that reads your uploads. In the editor, each of these is highlighted on the page itself, so you never map a name blind.

Field name	Type	Notes
topmostSubform[0].Page1[0].NameAddress[0].f1_01[0]	text
topmostSubform[0].Page1[0].NameAddress[0].f1_02[0]	text
topmostSubform[0].Page1[0].NameAddress[0].f1_03[0]	text
topmostSubform[0].Page1[0].f1_04[0]	text	max 11 chars
topmostSubform[0].Page1[0].f1_05[0]	text
topmostSubform[0].Page1[0].f1_06[0]	text
topmostSubform[0].Page1[0].c1_1[0]	checkbox
topmostSubform[0].Page1[0].c1_2[0]	checkbox
topmostSubform[0].Page1[0].f1_07[0]	text
topmostSubform[0].Page1[0].c1_3[0]	checkbox
topmostSubform[0].Page1[0].c1_3[1]	checkbox
topmostSubform[0].Page1[0].f1_08[0]	text
topmostSubform[0].Page1[0].c1_3[2]	checkbox
topmostSubform[0].Page1[0].c1_3[3]	checkbox
topmostSubform[0].Page1[0].f1_09[0]	text
topmostSubform[0].Page1[0].c1_4[0]	checkbox
topmostSubform[0].Page1[0].f1_10[0]	text
topmostSubform[0].Page1[0].f1_11[0]	text
topmostSubform[0].Page1[0].f1_12[0]	text
topmostSubform[0].Page1[0].f1_13[0]	text
topmostSubform[0].Page1[0].f1_14[0]	text
topmostSubform[0].Page1[0].f1_15[0]	text
topmostSubform[0].Page1[0].f1_16[0]	text
topmostSubform[0].Page1[0].f1_17[0]	text
topmostSubform[0].Page1[0].f1_18[0]	text
topmostSubform[0].Page1[0].f1_19[0]	text
topmostSubform[0].Page1[0].f1_20[0]	text
topmostSubform[0].Page1[0].f1_21[0]	text
topmostSubform[0].Page2[0].f2_01[0]	text
topmostSubform[0].Page2[0].f2_02[0]	text	max 10 chars
topmostSubform[0].Page2[0].Table_Part1[0].Row1[0].f2_03[0]	text (multiline)
topmostSubform[0].Page2[0].Table_Part1[0].Row1[0].f2_04[0]	text (multiline)
topmostSubform[0].Page2[0].Table_Part1[0].Row1[0].f2_05[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row1[0].f2_06[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row1[0].f2_07[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row1[0].f2_08[0]	text	max 11 chars
topmostSubform[0].Page2[0].Table_Part1[0].Row1[0].f2_09[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row2[0].f2_10[0]	text (multiline)
topmostSubform[0].Page2[0].Table_Part1[0].Row2[0].f2_11[0]	text (multiline)
topmostSubform[0].Page2[0].Table_Part1[0].Row2[0].f2_12[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row2[0].f2_13[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row2[0].f2_14[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row2[0].f2_15[0]	text	max 11 chars
topmostSubform[0].Page2[0].Table_Part1[0].Row2[0].f2_16[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row3[0].f2_17[0]	text (multiline)
topmostSubform[0].Page2[0].Table_Part1[0].Row3[0].f2_18[0]	text (multiline)
topmostSubform[0].Page2[0].Table_Part1[0].Row3[0].f2_19[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row3[0].f2_20[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row3[0].f2_21[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row3[0].f2_22[0]	text	max 11 chars
topmostSubform[0].Page2[0].Table_Part1[0].Row3[0].f2_23[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row4[0].f2_24[0]	text (multiline)
topmostSubform[0].Page2[0].Table_Part1[0].Row4[0].f2_25[0]	text (multiline)
topmostSubform[0].Page2[0].Table_Part1[0].Row4[0].f2_26[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row4[0].f2_27[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row4[0].f2_28[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row4[0].f2_29[0]	text	max 11 chars
topmostSubform[0].Page2[0].Table_Part1[0].Row4[0].f2_30[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row5[0].f2_31[0]	text (multiline)
topmostSubform[0].Page2[0].Table_Part1[0].Row5[0].f2_32[0]	text (multiline)
topmostSubform[0].Page2[0].Table_Part1[0].Row5[0].f2_33[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row5[0].f2_34[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row5[0].f2_35[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row5[0].f2_36[0]	text	max 11 chars
topmostSubform[0].Page2[0].Table_Part1[0].Row5[0].f2_37[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row6[0].f2_38[0]	text (multiline)
topmostSubform[0].Page2[0].Table_Part1[0].Row6[0].f2_39[0]	text (multiline)
topmostSubform[0].Page2[0].Table_Part1[0].Row6[0].f2_40[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row6[0].f2_41[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row6[0].f2_42[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row6[0].f2_43[0]	text	max 11 chars
topmostSubform[0].Page2[0].Table_Part1[0].Row6[0].f2_44[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row7[0].f2_45[0]	text (multiline)
topmostSubform[0].Page2[0].Table_Part1[0].Row7[0].f2_46[0]	text (multiline)
topmostSubform[0].Page2[0].Table_Part1[0].Row7[0].f2_47[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row7[0].f2_48[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row7[0].f2_49[0]	text
topmostSubform[0].Page2[0].Table_Part1[0].Row7[0].f2_50[0]	text	max 11 chars
topmostSubform[0].Page2[0].Table_Part1[0].Row7[0].f2_51[0]	text
topmostSubform[0].Page3[0].f3_01[0]	text
topmostSubform[0].Page3[0].f3_02[0]	text	max 10 chars
topmostSubform[0].Page3[0].c3_1[0]	checkbox
topmostSubform[0].Page3[0].c3_1[1]	checkbox
topmostSubform[0].Page3[0].c3_1[2]	checkbox
topmostSubform[0].Page3[0].c3_2[0]	checkbox
topmostSubform[0].Page3[0].c3_3[0]	checkbox
topmostSubform[0].Page3[0].c3_4[0]	checkbox
topmostSubform[0].Page3[0].c3_5[0]	checkbox
topmostSubform[0].Page3[0].c3_5[1]	checkbox
topmostSubform[0].Page3[0].c3_6[0]	checkbox
topmostSubform[0].Page3[0].c3_7[0]	checkbox
topmostSubform[0].Page3[0].c3_8[0]	checkbox
topmostSubform[0].Page3[0].c3_9[0]	checkbox
topmostSubform[0].Page4[0].f4_01[0]	text
topmostSubform[0].Page4[0].f4_02[0]	text	max 10 chars
topmostSubform[0].Page4[0].f4_03[0]	text (multiline)
topmostSubform[0].Page4[0].f4_04[0]	text	max 11 chars
topmostSubform[0].Page4[0].f4_05[0]	text (multiline)
topmostSubform[0].Page4[0].f4_06[0]	text	max 10 chars
topmostSubform[0].Page4[0].f4_07[0]	text

The form your shareholders have to finish

The 2553 isn't done when the entity's half is filled — every shareholder consents on their own line, with a signature. Prefill the entity's side, embed the form, and send each shareholder to sign their row; completed submissions land on your webhook, so 'waiting on one signature' is a state your system can see rather than an email thread.

Questions people ask

How is a 2553 filed?: By mail or fax to the IRS service center for the entity's state — there is no online filing. This produces the completed, signed PDF; the transmission is yours. Whether an electronic signature is acceptable on it is defined by the IRS's current e-signature policy, so check that before skipping ink.
What about a late election?: The form itself carries the representation lines used for late-election relief. Whether a client qualifies is tax advice — we produce the document, not the eligibility call.

See your Form 2553 pipeline working in the next five minutes

The button uploads the official PDF into the editor as a live template with an API key — no account, nothing to cancel. Trial documents are watermarked and kept for 24 hours; sign up to keep your work.

Doc2api is not affiliated with the Internal Revenue Service. Form 2553 is a public government work; the copy here is the official revision, refreshed from irs.gov. Nothing on this page is tax or legal advice — how a completed form may be signed, filed or retained is defined by the issuing agency.