Personal finance automation

Public version of the system I use for my own finances: it reads the bank statement, puts every transaction in a category and writes the monthly report, with rules first and the AI only for what the rules miss.

Code on GitHub Final report (PDF)

R$ 9,906.99income in 2026-09

R$ 7,811.99expenses, every row in a category

21%savings rate

OKbalance reconciled with the statement

96.8%AI classifier accuracy on a hand-labelled set

Monthly overview built from the synthetic statements

Monthly reports

Synthetic data: the real statements are private. Rules handle the usual shops; the AI handles the rest, and anything it is unsure about waits for my review and becomes a new rule.

Report 2026-09

Monthly report 2026-09

Synthetic data (generated by generate_data.py). Amounts in BRL.

Income	R$ 9,906.99
Expenses	-R$ 7,811.99
Net savings	R$ 2,095.00
Savings rate	21.1%
Rows	73
Statement reconciliation	OK

Totals by category

Category	Rows	Total
Income	4	R$ 9,906.99
Housing	3	-R$ 3,001.91
Groceries	16	-R$ 1,156.04
Transport	13	-R$ 692.08
Education	3	-R$ 647.16
Health	4	-R$ 604.01
Restaurants & Delivery	12	-R$ 517.51
Utilities	4	-R$ 426.89
Shopping	4	-R$ 416.16
Travel	1	-R$ 169.28
Subscriptions	4	-R$ 130.18
Fees & Taxes	2	-R$ 50.77
Net (income + expenses)	70	R$ 2,095.00

How each row was classified

Method	Rows	Share
rule (seed)	52	71%
rule (learned in review)	2	3%
LLM, confidence >= threshold	16	22%
internal movement (excluded)	3	4%

Top expenses

Date	Description	Amount	Category	Method
2026-09-08	IMOBILIARIA HORIZONTE ALUGUEL	-R$ 2,150.00	Housing	rule
2026-09-10	CONDOMINIO RESIDENCIAL JACARANDAS	-R$ 634.90	Housing	rule
2026-09-10	ESCOLA DE IDIOMAS FALA FACIL	-R$ 389.00	Education	rule
2026-09-04	OTICA VISAO CLARA	-R$ 326.95	Health	llm
2026-09-10	SUPERMERCADO BOM PRECO	-R$ 256.24	Groceries	rule
2026-09-01	JOSE ELETRICISTA REPAROS	-R$ 217.01	Housing	learned_rule
2026-09-18	SUPERMERCADO BOM PRECO	-R$ 200.63	Groceries	rule
2026-09-11	AUTO POSTO ESTRELA	-R$ 200.00	Transport	rule
2026-09-18	PAGAFACIL*TECH ACESSORIOS	-R$ 190.46	Shopping	rule
2026-09-13	LIVRARIA PAGINA CERTA	-R$ 175.92	Education	rule

Still in review

Nothing waiting for review.

Internal movements (excluded from income and expenses)

Kind	Rows	Total
credit-card bill payment	1	-R$ 858.84
investment application/redemption	1	-R$ 1,000.00
transfer between own accounts	1	-R$ 500.00

Imports covering this month

File	Encoding	Rows in file	New	Duplicates skipped	Balance check
statement-2026-09.csv	utf-8-sig	73	73	0	OK: running balance consistent over 73 rows; header balance matches the closing balance

All rows

Date	Description	Amount	Category	Method
2026-09-01	JOSE ELETRICISTA REPAROS	-R$ 217.01	Housing	learned_rule
2026-09-01	RANGOJA*PIZZARIA NAPOLI	-R$ 85.04	Restaurants & Delivery	rule
2026-09-02	SUPERMERCADO BOM PRECO	-R$ 114.39	Groceries	rule
2026-09-03	CARLA M SOUZA	R$ 128.22	Income	learned_rule
2026-09-03	STREAMFLIX ASSINATURA	-R$ 39.90	Subscriptions	rule
2026-09-04	OTICA VISAO CLARA	-R$ 326.95	Health	llm
2026-09-04	RANGOJA*SUSHI KAZU	-R$ 65.52	Restaurants & Delivery	rule
2026-09-04	RESTAURANTE SABOR CASEIRO	-R$ 31.07	Restaurants & Delivery	rule
2026-09-04	VAIJA *VIAGEM F9VS	-R$ 38.38	Transport	rule
2026-09-04	VAIJA *VIAGEM J5TX	-R$ 41.59	Transport	rule
2026-09-05	DROGARIA SAO BENTO	-R$ 110.87	Health	rule
2026-09-05	VIDEOAULAS PREMIUM MENSAL	-R$ 58.48	Subscriptions	llm
2026-09-05	RANGOJA*MERCADINHO EXPRESSO	-R$ 48.50	Groceries	rule
2026-09-05	AUTO POSTO ESTRELA	-R$ 16.36	Groceries	rule
2026-09-05	ACME SERVICOS DIGITAIS LTDA	R$ 9,600.00	Income	rule
2026-09-06	ACADEMIA CORPO ATIVO	-R$ 119.90	Health	rule
2026-09-06	ANA EXEMPLO	-R$ 500.00	-	internal
2026-09-07	CDB LIQUIDEZ DIARIA	-R$ 1,000.00	-	internal
2026-09-07	PAPELARIA MATERIAL ESCOLAR	-R$ 82.24	Education	llm
2026-09-07	HORTIFRUTI FOLHA VERDE	-R$ 18.54	Groceries	rule
2026-09-08	IMOBILIARIA HORIZONTE ALUGUEL	-R$ 2,150.00	Housing	rule
2026-09-09	SUPERMERCADO BOM PRECO	-R$ 89.60	Groceries	rule
2026-09-09	AUTO POSTO ESTRELA	-R$ 150.00	Transport	rule
2026-09-09	LANCHONETE DA ESQUINA	-R$ 28.14	Restaurants & Delivery	llm
2026-09-09	SONORA MUSIC PREMIUM	-R$ 21.90	Subscriptions	rule
2026-09-09	METRO RECARGA CARTAO TRANSPORTE	-R$ 50.00	Transport	rule
2026-09-09	EXPRESSO SUL RODOVIARIA	-R$ 169.28	Travel	llm
2026-09-10	ESCOLA DE IDIOMAS FALA FACIL	-R$ 389.00	Education	rule
2026-09-10	CONDOMINIO RESIDENCIAL JACARANDAS	-R$ 634.90	Housing	rule
2026-09-10	SUPERMERCADO BOM PRECO	-R$ 256.24	Groceries	rule
2026-09-11	AUTO POSTO ESTRELA	-R$ 200.00	Transport	rule
2026-09-12	PADARIA TRIGO DOURADO	-R$ 37.37	Groceries	rule
2026-09-12	VAIJA *VIAGEM QLW5	-R$ 28.74	Transport	rule
2026-09-12	PAGAMENTO FATURA CARTAO	-R$ 858.84	-	internal
2026-09-12	NETVELOZ INTERNET FIBRA	-R$ 119.90	Utilities	rule
2026-09-12	CAFETERIA GRAO NOBRE	-R$ 26.53	Restaurants & Delivery	llm
2026-09-13	LIVRARIA PAGINA CERTA	-R$ 175.92	Education	rule
2026-09-14	CAFETERIA GRAO NOBRE	-R$ 15.28	Restaurants & Delivery	llm
2026-09-15	BORRACHARIA DO ZE	-R$ 42.55	Transport	llm
2026-09-15	COMPANHIA LUZ E FORCA	-R$ 147.70	Utilities	rule
2026-09-16	RESTAURANTE SABOR CASEIRO	-R$ 63.16	Restaurants & Delivery	rule
2026-09-16	VAIJA *VIAGEM XW93	-R$ 21.23	Transport	rule
2026-09-16	PET SHOP AMIGO FIEL	-R$ 83.96	Shopping	llm
2026-09-16	VAIJA *VIAGEM Y42P	-R$ 15.02	Transport	rule
2026-09-17	RANGOJA*ACAI TROPICAL	-R$ 70.43	Restaurants & Delivery	rule
2026-09-18	LANCHONETE DA ESQUINA	-R$ 15.37	Restaurants & Delivery	llm
2026-09-18	SUPERMERCADO BOM PRECO	-R$ 200.63	Groceries	rule
2026-09-18	PAGAFACIL*TECH ACESSORIOS	-R$ 190.46	Shopping	rule
2026-09-18	DROGARIA SAO BENTO	-R$ 46.29	Health	rule
2026-09-18	AGUAS DO VALE SANEAMENTO	-R$ 99.30	Utilities	rule
2026-09-19	SUPERMERCADO BOM PRECO	-R$ 76.49	Groceries	rule
2026-09-19	LIVRARIA PAGINA CERTA	-R$ 55.61	Shopping	rule
2026-09-20	JUROS CHEQUE ESPECIAL	-R$ 17.87	Fees & Taxes	llm
2026-09-20	ALO MOVEL TELEFONIA	-R$ 59.99	Utilities	rule
2026-09-21	HORTIFRUTI FOLHA VERDE	-R$ 45.36	Groceries	rule
2026-09-21	VAIJA *VIAGEM RY7Y	-R$ 12.22	Transport	rule
2026-09-21	CAFETERIA GRAO NOBRE	-R$ 22.76	Restaurants & Delivery	llm
2026-09-22	PAGAFACIL REPASSE VENDAS	R$ 170.13	Income	rule
2026-09-22	NUVEMDRIVE ARMAZENAMENTO	-R$ 9.90	Subscriptions	rule
2026-09-24	SUPERMERCADO BOM PRECO	-R$ 112.11	Groceries	rule
2026-09-24	HORTIFRUTI FOLHA VERDE	-R$ 52.54	Groceries	rule
2026-09-25	PADARIA TRIGO DOURADO	-R$ 13.39	Groceries	rule
2026-09-25	ESTACIONAMENTO CENTRAL PARK	-R$ 27.32	Transport	llm
2026-09-25	PADARIA TRIGO DOURADO	-R$ 13.13	Groceries	rule
2026-09-25	FLORICULTURA JARDIM SECRETO	-R$ 86.13	Shopping	llm
2026-09-26	PADARIA TRIGO DOURADO	-R$ 37.90	Groceries	rule
2026-09-27	ESTACIONAMENTO CENTRAL PARK	-R$ 26.44	Transport	llm
2026-09-28	TARIFA PACOTE DE SERVICOS	-R$ 32.90	Fees & Taxes	rule
2026-09-28	RESTAURANTE SABOR CASEIRO	-R$ 39.03	Restaurants & Delivery	rule
2026-09-29	RANGOJA*PIZZARIA NAPOLI	-R$ 55.18	Restaurants & Delivery	rule
2026-09-29	PADARIA TRIGO DOURADO	-R$ 23.49	Groceries	rule
2026-09-30	VAIJA *VIAGEM N7QY	-R$ 38.59	Transport	rule
2026-09-30	RENDIMENTO CONTA REMUNERADA	R$ 8.64	Income	llm

Report 2026-08

Monthly report 2026-08

Synthetic data (generated by generate_data.py). Amounts in BRL.

Income	R$ 10,327.30
Expenses	-R$ 8,441.35
Net savings	R$ 1,885.95
Savings rate	18.3%
Rows	75
Statement reconciliation	OK

Totals by category

Category	Rows	Total
Income	3	R$ 9,901.94
Housing	3	-R$ 2,964.25
Groceries	16	-R$ 1,449.04
Shopping	5	-R$ 1,224.93
Transport	11	-R$ 631.02
Restaurants & Delivery	16	-R$ 567.57
Education	2	-R$ 541.49
Health	3	-R$ 430.54
Utilities	4	-R$ 413.73
Fees & Taxes	2	-R$ 95.05
Subscriptions	3	-R$ 71.70
Other	1	-R$ 52.03
(in review)	1	R$ 425.36
Net (income + expenses)	70	R$ 1,885.95

How each row was classified

Method	Rows	Share
rule (seed)	50	67%
LLM, confidence >= threshold	19	25%
waiting in review	1	1%
internal movement (excluded)	5	7%

Top expenses

Date	Description	Amount	Category	Method
2026-08-08	IMOBILIARIA HORIZONTE ALUGUEL	-R$ 2,150.00	Housing	rule
2026-08-22	MAGAZINE ELETRO LAR	-R$ 860.80	Shopping	llm
2026-08-10	CONDOMINIO RESIDENCIAL JACARANDAS	-R$ 634.90	Housing	rule
2026-08-10	ESCOLA DE IDIOMAS FALA FACIL	-R$ 389.00	Education	rule
2026-08-22	ATACADAO DO POVO	-R$ 317.36	Groceries	rule
2026-08-23	CLINICA ODONTO SORRISO	-R$ 207.10	Health	llm
2026-08-01	MATERIAL DE CONSTRUCAO TIJOLAO	-R$ 179.35	Housing	llm
2026-08-14	SUPERMERCADO BOM PRECO	-R$ 168.90	Groceries	rule
2026-08-10	SUPERMERCADO BOM PRECO	-R$ 168.30	Groceries	rule
2026-08-25	SUPERMERCADO BOM PRECO	-R$ 167.04	Groceries	rule

Still in review

Id	Description	LLM suggestion	Confidence	Rows	Total
19	MARCOS A ROCHA	Other	0.40	1	R$ 425.36

Internal movements (excluded from income and expenses)

Kind	Rows	Total
cash withdrawal	1	-R$ 100.00
credit-card bill payment	1	-R$ 795.55
investment application/redemption	2	-R$ 400.00
transfer between own accounts	1	-R$ 500.00

Imports covering this month

File	Encoding	Rows in file	New	Duplicates skipped	Balance check
statement-2026-08.csv	latin-1	75	75	0	OK: running balance consistent over 75 rows; header balance matches the closing balance

All rows

Date	Description	Amount	Category	Method
2026-08-01	MATERIAL DE CONSTRUCAO TIJOLAO	-R$ 179.35	Housing	llm
2026-08-02	CAFETERIA GRAO NOBRE	-R$ 11.33	Restaurants & Delivery	llm
2026-08-03	STREAMFLIX ASSINATURA	-R$ 39.90	Subscriptions	rule
2026-08-03	PAG*GAMEPLAY STORE	-R$ 84.54	Shopping	llm
2026-08-04	AUTO POSTO ESTRELA	-R$ 150.00	Transport	rule
2026-08-04	RANGOJA*ACAI TROPICAL	-R$ 50.57	Restaurants & Delivery	rule
2026-08-05	PEDAGIO RODOVIA DAS FLORES	-R$ 11.57	Transport	llm
2026-08-05	ACME SERVICOS DIGITAIS LTDA	R$ 9,600.00	Income	rule
2026-08-06	VAIJA *VIAGEM YW7C	-R$ 45.07	Transport	rule
2026-08-06	ANA EXEMPLO	-R$ 500.00	-	internal
2026-08-06	ACADEMIA CORPO ATIVO	-R$ 119.90	Health	rule
2026-08-06	RESTAURANTE SABOR CASEIRO	-R$ 41.17	Restaurants & Delivery	rule
2026-08-07	CAFETERIA GRAO NOBRE	-R$ 27.95	Restaurants & Delivery	llm
2026-08-07	HORTIFRUTI FOLHA VERDE	-R$ 72.36	Groceries	rule
2026-08-07	CDB LIQUIDEZ DIARIA	-R$ 1,000.00	-	internal
2026-08-07	RANGOJA*ACAI TROPICAL	-R$ 78.05	Restaurants & Delivery	rule
2026-08-08	IMOBILIARIA HORIZONTE ALUGUEL	-R$ 2,150.00	Housing	rule
2026-08-08	PET SHOP AMIGO FIEL	-R$ 134.11	Shopping	llm
2026-08-09	RANGOJA*BURGUER DO BAIRRO	-R$ 38.08	Restaurants & Delivery	rule
2026-08-09	VAIJA *VIAGEM WP75	-R$ 47.19	Transport	rule
2026-08-09	SONORA MUSIC PREMIUM	-R$ 21.90	Subscriptions	rule
2026-08-10	SUPERMERCADO BOM PRECO	-R$ 168.30	Groceries	rule
2026-08-10	VAIJA *VIAGEM SEA4	-R$ 42.79	Transport	rule
2026-08-10	ESCOLA DE IDIOMAS FALA FACIL	-R$ 389.00	Education	rule
2026-08-10	CONDOMINIO RESIDENCIAL JACARANDAS	-R$ 634.90	Housing	rule
2026-08-11	PADARIA TRIGO DOURADO	-R$ 33.39	Groceries	rule
2026-08-11	VAIJA *VIAGEM BVHG	-R$ 35.75	Transport	rule
2026-08-11	SAQUE BANCO 24 HORAS	-R$ 100.00	-	internal
2026-08-12	NETVELOZ INTERNET FIBRA	-R$ 119.90	Utilities	rule
2026-08-12	PAGAMENTO FATURA CARTAO	-R$ 795.55	-	internal
2026-08-13	ESTACIONAMENTO CENTRAL PARK	-R$ 19.58	Transport	llm
2026-08-13	AUTO POSTO ESTRELA	-R$ 11.55	Groceries	rule
2026-08-13	ESTACIONAMENTO CENTRAL PARK	-R$ 16.31	Transport	llm
2026-08-14	PADARIA TRIGO DOURADO	-R$ 13.47	Groceries	rule
2026-08-14	SUPERMERCADO BOM PRECO	-R$ 168.90	Groceries	rule
2026-08-15	COMPANHIA LUZ E FORCA	-R$ 156.85	Utilities	rule
2026-08-15	SUPERMERCADO BOM PRECO	-R$ 109.35	Groceries	rule
2026-08-16	SUPERMERCADO BOM PRECO	-R$ 86.59	Groceries	rule
2026-08-16	CARTORIO 2 OFICIO DE NOTAS	-R$ 62.15	Fees & Taxes	llm
2026-08-18	AGUAS DO VALE SANEAMENTO	-R$ 76.99	Utilities	rule
2026-08-18	RANGOJA*MARMITA DA VO	-R$ 42.79	Restaurants & Delivery	rule
2026-08-18	PADARIA TRIGO DOURADO	-R$ 8.82	Groceries	rule
2026-08-18	CAFETERIA GRAO NOBRE	-R$ 12.08	Restaurants & Delivery	llm
2026-08-20	RANGOJA*BURGUER DO BAIRRO	-R$ 74.23	Restaurants & Delivery	rule
2026-08-20	LANCHONETE DA ESQUINA	-R$ 18.95	Restaurants & Delivery	llm
2026-08-20	ALO MOVEL TELEFONIA	-R$ 59.99	Utilities	rule
2026-08-21	LANCHONETE DA ESQUINA	-R$ 21.77	Restaurants & Delivery	llm
2026-08-21	LANCHONETE DA ESQUINA	-R$ 14.90	Restaurants & Delivery	llm
2026-08-21	PADARIA TRIGO DOURADO	-R$ 33.01	Groceries	rule
2026-08-22	RANGOJA*MERCADINHO EXPRESSO	-R$ 44.83	Groceries	rule
2026-08-22	NUVEMDRIVE ARMAZENAMENTO	-R$ 9.90	Subscriptions	rule
2026-08-22	MAGAZINE ELETRO LAR	-R$ 860.80	Shopping	llm
2026-08-22	ATACADAO DO POVO	-R$ 317.36	Groceries	rule
2026-08-23	CLINICA ODONTO SORRISO	-R$ 207.10	Health	llm
2026-08-23	RANGOJA*SUSHI KAZU	-R$ 38.39	Restaurants & Delivery	rule
2026-08-23	PAGAFACIL*CASA E DECOR	-R$ 109.42	Shopping	rule
2026-08-24	CAFETERIA GRAO NOBRE	-R$ 9.71	Restaurants & Delivery	llm
2026-08-24	PAGAFACIL REPASSE VENDAS	R$ 290.82	Income	rule
2026-08-24	DROGARIA SAO BENTO	-R$ 103.54	Health	rule
2026-08-24	RESTAURANTE SABOR CASEIRO	-R$ 55.13	Restaurants & Delivery	rule
2026-08-25	SUPERMERCADO BOM PRECO	-R$ 167.04	Groceries	rule
2026-08-25	CDB LIQUIDEZ DIARIA	R$ 600.00	-	internal
2026-08-26	PADARIA TRIGO DOURADO	-R$ 33.40	Groceries	rule
2026-08-26	RESTAURANTE SABOR CASEIRO	-R$ 32.47	Restaurants & Delivery	rule
2026-08-27	METRO RECARGA CARTAO TRANSPORTE	-R$ 100.00	Transport	rule
2026-08-27	SUPERMERCADO BOM PRECO	-R$ 149.48	Groceries	rule
2026-08-28	TARIFA PACOTE DE SERVICOS	-R$ 32.90	Fees & Taxes	rule
2026-08-28	HORTIFRUTI FOLHA VERDE	-R$ 31.19	Groceries	rule
2026-08-29	LIVRARIA PAGINA CERTA	-R$ 36.06	Shopping	rule
2026-08-29	AUTO POSTO ESTRELA	-R$ 150.00	Transport	rule
2026-08-29	CURSO ONLINE APRENDA MAIS	-R$ 152.49	Education	llm
2026-08-30	VAIJA *VIAGEM S4AD	-R$ 12.76	Transport	rule
2026-08-31	RENDIMENTO CONTA REMUNERADA	R$ 11.12	Income	llm
2026-08-31	INSTITUTO ESPERANCA DOACAO	-R$ 52.03	Other	llm
2026-08-31	MARCOS A ROCHA	R$ 425.36	-	review

Report 2026-07

Monthly report 2026-07

Synthetic data (generated by generate_data.py). Amounts in BRL.

Income	R$ 9,617.76
Expenses	-R$ 9,868.17
Net savings	-R$ 250.41
Savings rate	-2.6%
Rows	75
Statement reconciliation	OK

Totals by category

Category	Rows	Total
Income	2	R$ 9,617.76
Housing	3	-R$ 2,934.98
Groceries	16	-R$ 1,671.60
Travel	2	-R$ 1,409.57
Transport	13	-R$ 743.41
Restaurants & Delivery	15	-R$ 641.05
Education	2	-R$ 599.80
Shopping	4	-R$ 510.56
Utilities	4	-R$ 420.71
Health	4	-R$ 394.33
Fees & Taxes	2	-R$ 353.60
Subscriptions	3	-R$ 71.70
(in review)	1	-R$ 116.86
Net (income + expenses)	71	-R$ 250.41

How each row was classified

Method	Rows	Share
rule (seed)	53	71%
LLM, confidence >= threshold	17	23%
waiting in review	1	1%
internal movement (excluded)	4	5%

Top expenses

Date	Description	Amount	Category	Method
2026-07-08	IMOBILIARIA HORIZONTE ALUGUEL	-R$ 2,150.00	Housing	rule
2026-07-24	VOEBEM LINHAS AEREAS	-R$ 807.28	Travel	llm
2026-07-10	CONDOMINIO RESIDENCIAL JACARANDAS	-R$ 634.90	Housing	rule
2026-07-28	POUSADA MAR AZUL	-R$ 602.29	Travel	llm
2026-07-10	ESCOLA DE IDIOMAS FALA FACIL	-R$ 389.00	Education	rule
2026-07-14	GUIA IPVA 2026 COTA 3	-R$ 320.70	Fees & Taxes	llm
2026-07-31	SUPERMERCADO BOM PRECO	-R$ 229.09	Groceries	rule
2026-07-08	SUPERMERCADO BOM PRECO	-R$ 225.51	Groceries	rule
2026-07-29	SUPERMERCADO BOM PRECO	-R$ 221.49	Groceries	rule
2026-07-29	SUPERMERCADO BOM PRECO	-R$ 216.68	Groceries	rule

Still in review

Id	Description	LLM suggestion	Confidence	Rows	Total
9	PEDRO H LIMA	Other	0.40	1	-R$ 116.86

Internal movements (excluded from income and expenses)

Kind	Rows	Total
cash withdrawal	1	-R$ 100.00
credit-card bill payment	1	-R$ 786.40
investment application/redemption	1	-R$ 700.00
transfer between own accounts	1	-R$ 500.00

Imports covering this month

File	Encoding	Rows in file	New	Duplicates skipped	Balance check
statement-2026-07.csv	utf-8-sig	75	75	0	OK: running balance consistent over 75 rows; header balance matches the closing balance
statement-2026-07.csv	utf-8-sig	75	0	75	OK: running balance consistent over 75 rows; header balance matches the closing balance

All rows

Date	Description	Amount	Category	Method
2026-07-01	CAFETERIA GRAO NOBRE	-R$ 19.39	Restaurants & Delivery	llm
2026-07-01	HORTIFRUTI FOLHA VERDE	-R$ 34.37	Groceries	rule
2026-07-01	CAFETERIA GRAO NOBRE	-R$ 20.59	Restaurants & Delivery	llm
2026-07-03	RANGOJA*ACAI TROPICAL	-R$ 51.47	Restaurants & Delivery	rule
2026-07-03	STREAMFLIX ASSINATURA	-R$ 39.90	Subscriptions	rule
2026-07-03	CAFETERIA GRAO NOBRE	-R$ 24.89	Restaurants & Delivery	llm
2026-07-03	LIVRARIA PAGINA CERTA	-R$ 210.80	Education	rule
2026-07-04	SUPERMERCADO BOM PRECO	-R$ 173.74	Groceries	rule
2026-07-04	LANCHONETE DA ESQUINA	-R$ 29.29	Restaurants & Delivery	llm
2026-07-04	RESTAURANTE SABOR CASEIRO	-R$ 59.51	Restaurants & Delivery	rule
2026-07-05	ACME SERVICOS DIGITAIS LTDA	R$ 9,600.00	Income	rule
2026-07-06	ANA EXEMPLO	-R$ 500.00	-	internal
2026-07-06	ACADEMIA CORPO ATIVO	-R$ 119.90	Health	rule
2026-07-07	CDB LIQUIDEZ DIARIA	-R$ 700.00	-	internal
2026-07-08	IMOBILIARIA HORIZONTE ALUGUEL	-R$ 2,150.00	Housing	rule
2026-07-08	HORTIFRUTI FOLHA VERDE	-R$ 22.60	Groceries	rule
2026-07-08	LANCHONETE DA ESQUINA	-R$ 26.28	Restaurants & Delivery	llm
2026-07-08	SUPERMERCADO BOM PRECO	-R$ 225.51	Groceries	rule
2026-07-09	VAIJA *VIAGEM S3V8	-R$ 40.39	Transport	rule
2026-07-09	SONORA MUSIC PREMIUM	-R$ 21.90	Subscriptions	rule
2026-07-10	ESCOLA DE IDIOMAS FALA FACIL	-R$ 389.00	Education	rule
2026-07-10	CONDOMINIO RESIDENCIAL JACARANDAS	-R$ 634.90	Housing	rule
2026-07-11	PET SHOP AMIGO FIEL	-R$ 121.43	Shopping	llm
2026-07-11	AUTO POSTO ESTRELA	-R$ 100.00	Transport	rule
2026-07-12	PAGAMENTO FATURA CARTAO	-R$ 786.40	-	internal
2026-07-12	NETVELOZ INTERNET FIBRA	-R$ 119.90	Utilities	rule
2026-07-13	VAIJA *VIAGEM 8BQJ	-R$ 40.91	Transport	rule
2026-07-14	SAQUE BANCO 24 HORAS	-R$ 100.00	-	internal
2026-07-14	VAIJA *VIAGEM ACK7	-R$ 40.34	Transport	rule
2026-07-14	RANGOJA*MERCADINHO EXPRESSO	-R$ 47.25	Groceries	rule
2026-07-14	GUIA IPVA 2026 COTA 3	-R$ 320.70	Fees & Taxes	llm
2026-07-14	RESTAURANTE SABOR CASEIRO	-R$ 53.21	Restaurants & Delivery	rule
2026-07-15	COMPANHIA LUZ E FORCA	-R$ 150.72	Utilities	rule
2026-07-15	AUTO POSTO ESTRELA	-R$ 200.00	Transport	rule
2026-07-16	PADARIA TRIGO DOURADO	-R$ 37.40	Groceries	rule
2026-07-17	RANGOJA*ACAI TROPICAL	-R$ 50.40	Restaurants & Delivery	rule
2026-07-17	CHAVEIRO SEGURO 24H	-R$ 150.08	Housing	llm
2026-07-17	VAIJA *VIAGEM QH78	-R$ 36.87	Transport	rule
2026-07-18	AGUAS DO VALE SANEAMENTO	-R$ 90.10	Utilities	rule
2026-07-18	LABORATORIO ANALISES VIDA	-R$ 172.50	Health	llm
2026-07-19	CALCADOS PASSO FIRME	-R$ 187.90	Shopping	llm
2026-07-19	VAIJA *VIAGEM 9ZNS	-R$ 36.01	Transport	rule
2026-07-20	HORTIFRUTI FOLHA VERDE	-R$ 23.59	Groceries	rule
2026-07-20	ALO MOVEL TELEFONIA	-R$ 59.99	Utilities	rule
2026-07-20	CHURRASCARIA BRASA VIVA	-R$ 105.75	Restaurants & Delivery	llm
2026-07-21	SUPERMERCADO BOM PRECO	-R$ 186.24	Groceries	rule
2026-07-21	RANGOJA*MARMITA DA VO	-R$ 40.88	Restaurants & Delivery	rule
2026-07-22	PADARIA TRIGO DOURADO	-R$ 15.55	Groceries	rule
2026-07-22	ESTACIONAMENTO CENTRAL PARK	-R$ 23.44	Transport	llm
2026-07-22	NUVEMDRIVE ARMAZENAMENTO	-R$ 9.90	Subscriptions	rule
2026-07-23	AUTO POSTO ESTRELA	-R$ 19.61	Groceries	rule
2026-07-24	LIVRARIA PAGINA CERTA	-R$ 56.56	Shopping	rule
2026-07-24	RANGOJA*BURGUER DO BAIRRO	-R$ 54.90	Restaurants & Delivery	rule
2026-07-24	RANGOJA*BURGUER DO BAIRRO	-R$ 37.65	Restaurants & Delivery	rule
2026-07-24	VOEBEM LINHAS AEREAS	-R$ 807.28	Travel	llm
2026-07-25	ESTACIONAMENTO CENTRAL PARK	-R$ 14.79	Transport	llm
2026-07-27	PADARIA TRIGO DOURADO	-R$ 28.38	Groceries	rule
2026-07-28	RESTAURANTE SABOR CASEIRO	-R$ 49.27	Restaurants & Delivery	rule
2026-07-28	SUPERMERCADO BOM PRECO	-R$ 175.79	Groceries	rule
2026-07-28	TARIFA PACOTE DE SERVICOS	-R$ 32.90	Fees & Taxes	rule
2026-07-28	VAIJA *VIAGEM 35NU	-R$ 41.44	Transport	rule
2026-07-28	POUSADA MAR AZUL	-R$ 602.29	Travel	llm
2026-07-29	SUPERMERCADO BOM PRECO	-R$ 216.68	Groceries	rule
2026-07-29	PAGAFACIL*LOJA ESTILO URBANO	-R$ 144.67	Shopping	rule
2026-07-29	SUPERMERCADO BOM PRECO	-R$ 221.49	Groceries	rule
2026-07-29	PADARIA TRIGO DOURADO	-R$ 14.31	Groceries	rule
2026-07-30	DROGARIA SAO BENTO	-R$ 35.43	Health	rule
2026-07-30	VAIJA *VIAGEM 795C	-R$ 41.42	Transport	rule
2026-07-30	VAIJA *VIAGEM G58K	-R$ 27.80	Transport	rule
2026-07-30	PEDRO H LIMA	-R$ 116.86	-	review
2026-07-30	CAFETERIA GRAO NOBRE	-R$ 17.57	Restaurants & Delivery	llm
2026-07-31	DROGARIA SAO BENTO	-R$ 66.50	Health	rule
2026-07-31	RENDIMENTO CONTA REMUNERADA	R$ 17.76	Income	llm
2026-07-31	METRO RECARGA CARTAO TRANSPORTE	-R$ 100.00	Transport	rule
2026-07-31	SUPERMERCADO BOM PRECO	-R$ 229.09	Groceries	rule

How well the AI classifies

Evaluation on the hand-labelled set

Eval: LLM classifier on the golden set

The golden set holds every description in the synthetic statements that the seed rules do not catch, with the expected category (tests/golden/labels.csv).

Golden set: 31 descriptions, answered 31
Accuracy (all answers): 96.8%
Auto-applied (confidence >= 0.8): 27, accuracy 96.3%
Sent to review: 4 (of which wrong: 0)
Confusion (expected -> predicted, errors only):
  Education -> Subscriptions: 1
Wrong but confident (would be used without review):
  VIDEOAULAS PREMIUM MENSAL: expected Education, got Subscriptions at 0.85

Description	Expected	Predicted	Confidence	Result
BORRACHARIA DO ZE	Transport	Transport	0.90	ok
CAFETERIA GRAO NOBRE	Restaurants & Delivery	Restaurants & Delivery	0.90	ok
CALCADOS PASSO FIRME	Shopping	Shopping	0.90	ok
CARLA M SOUZA	Income	Income	0.60	ok
CARTORIO 2 OFICIO DE NOTAS	Fees & Taxes	Fees & Taxes	0.85	ok
CHAVEIRO SEGURO 24H	Housing	Housing	0.90	ok
CHURRASCARIA BRASA VIVA	Restaurants & Delivery	Restaurants & Delivery	0.95	ok
CLINICA ODONTO SORRISO	Health	Health	0.95	ok
CURSO ONLINE APRENDA MAIS	Education	Education	0.90	ok
ESTACIONAMENTO CENTRAL PARK	Transport	Transport	0.95	ok
EXPRESSO SUL RODOVIARIA	Travel	Travel	0.80	ok
FLORICULTURA JARDIM SECRETO	Shopping	Shopping	0.85	ok
GUIA IPVA 2026 COTA 3	Fees & Taxes	Fees & Taxes	0.95	ok
INSTITUTO ESPERANCA DOACAO	Other	Other	0.80	ok
JOSE ELETRICISTA REPAROS	Housing	Housing	0.70	ok
JUROS CHEQUE ESPECIAL	Fees & Taxes	Fees & Taxes	0.95	ok
LABORATORIO ANALISES VIDA	Health	Health	0.95	ok
LANCHONETE DA ESQUINA	Restaurants & Delivery	Restaurants & Delivery	0.85	ok
MAGAZINE ELETRO LAR	Shopping	Shopping	0.90	ok
MARCOS A ROCHA	Income	Income	0.60	ok
MATERIAL DE CONSTRUCAO TIJOLAO	Housing	Housing	0.95	ok
OTICA VISAO CLARA	Health	Health	0.92	ok
PAG*GAMEPLAY STORE	Shopping	Shopping	0.85	ok
PAPELARIA MATERIAL ESCOLAR	Education	Education	0.90	ok
PEDAGIO RODOVIA DAS FLORES	Transport	Transport	0.95	ok
PEDRO H LIMA	Other	Other	0.40	ok
PET SHOP AMIGO FIEL	Shopping	Shopping	0.88	ok
POUSADA MAR AZUL	Travel	Travel	0.93	ok
RENDIMENTO CONTA REMUNERADA	Income	Income	0.97	ok
VIDEOAULAS PREMIUM MENSAL	Education	Subscriptions	0.85	wrong, auto-applied
VOEBEM LINHAS AEREAS	Travel	Travel	0.95	ok

Built by python -m finance_automation.page from the files in this repository, with no API call. One file, no server: it also opens straight from disk.