# hledger 1.51 conversion rules for Open Collective's "Platform Default" CSV format
# with the "Export taxes and payment processor fees as columns" option enabled.
# See README.md for more details.
#
# Examples:
#
# A contribution transaction before 2021-06:
# "Effective Date & Time","Transaction ID","Description","Credit/Debit","Kind","Group ID","Amount Single Column","Currency","Is Reverse","Is Reversed","Reverse Transaction ID","Account Handle","Account Name","Opposite Account Handle","Opposite Account Name","Payment Processor","Payment Method","Contribution Memo","Expense Type","Expense Tags","Expense Payout Method Type","Accounting Category Code","Accounting Category Name","Merchant ID","Reverse Kind","Payment Processor Fee","Tax Amount"
# "2017-01-20T19:21:45",5126,"Monthly contribution from Simon Michael (Bronze)","CREDIT","CONTRIBUTION","8b272eb0-d303-4cea-99db-3bcc40f54518",8.41,"USD","","","","hledger","hledger","simon","Simon Michael","STRIPE","CREDITCARD",,,"",,"","",,,-0.59,0
#
# A contribution transaction after 2021-06:
# "2025-12-23T10:59:07",11299548,"Monthly contribution from Guest (Bronze)","CREDIT","CONTRIBUTION","d40ea8c3-f20f-4a88-8426-8c7405be447c",1.41,"USD","","","","hledger","hledger","guest-d120c27f","Guest","PAYPAL","SUBSCRIPTION",,,"",,"","",,,-0.59,0
# "2025-12-23T10:59:07",11299543,"Host Fee to Open Source Collective","DEBIT","HOST_FEE","d40ea8c3-f20f-4a88-8426-8c7405be447c",-0.2,"USD","","","","hledger","hledger","opensource","Open Source Collective",,,,,"",,"","",,,0,0

source hledger-transactions.csv
#archive
fields date_time, transaction_id, description, credit_debit, kind, group_id, amount_single_column, currency_, is_reverse, is_reversed, reverse_transaction_id, account_handle, account_name, opposite_account_handle, opposite_account_name, payment_processor, payment_method, contribution_memo, expense_type, expense_tags, expense_payout_method_type, accounting_category_code, accounting_category_name, merchant_id, reverse_kind, payment_processor_fee, tax_amount
skip 1
newest-first
date-format %Y-%m-%dT%H:%M:%S
date %date_time
comment  \nid:%transaction_id, group:%group_id, dc:%type
if %is_reverse .
 comment \nid:%transaction_id, reversing:%reverse_transaction_id, group:%group_id, dc:%type

# We will generate postings in FROM,TO order most of the time:
# posting1 is the source, if any
# posting2 is this open collective account
# posting3 is the payment processor fee, if any
# posting4 is the destination, if any

account2 assets:opencollective:%account_name
amount2  %amount_single_column %currency_


if %payment_processor_fee [1-9]
 account3 expenses:fees:processor:%payment_processor
 amount3  -%payment_processor_fee %currency_

if %payment_processor_fee [1-9] && ! %payment_processor .
 account3 expenses:fees:processor:%expense_payout_method_type


if %kind CONTRIBUTION
 account1 revenues:contributions:%opposite_account_name

if %kind CONTRIBUTION && %credit_debit DEBIT && ! %is_reverse REVERSE
 account1 expenses:disbursed:%opposite_account_name


if %kind EXPENSE
 account4 expenses:disbursed:%opposite_account_name

if %kind HOST_FEE
 account4 expenses:fees:host:%opposite_account_name

if %kind PAYMENT_PROCESSOR_COVER
 account4 expenses:fees:processor:%opposite_account_name