credit cards: month-12 renew autopsy for “cashback credit cards” — proof pack before prepaid

Nubank vs Inter vs C6 Bank through month 12

Nubank only “wins” the “cashback credit cards” chatter if the written price stays ≤ $270/month after seats and FX.

Inter often shows near “best cash back cards”; charge the same renew line, not just the trial.

Keep C6 Bank as control: if export fails, freeze the whole shortlist — including hype around Nubank.

2-week timeline

• Week 1: capture renew and cancel for Nubank/Inter.
• Week 2: rerun workload and export on C6 Bank.
• Later: discuss prepaid only if “double cash back cards” still has operational meaning.

If the implied bump exceeds ~26% with no UI warning, Compare Card marks a deal-breaker.

When to kill the upgrade

• Renew for Nubank or Inter only lives in a retention chat.
• Export for C6 Bank will not open offline.
• “best credit cards 2026” cannot become one internal metric sentence.
• The SERP for “cashback credit cards” only pushes demos without a month-12 number.

Autopsy go / no-go

Sign annual on card-picks-2026 only if the proof pack is complete and the honest total covers migration. Otherwise stay monthly.

Compare Card revisits when “cashback credit cards” or “best cash back cards” change meaning for the team — not when an influencer switches vendors.

Kit: month-12 screenshot, export sample, cancel URL, invoice owner, sentence tying “double cash back cards” to an internal KPI.

Compare Card (card-picks-2026) opens a month-12 renew autopsy for credit cards. If “cashback credit cards” is loud in search, the card still needs the real invoice — not the teaser.

Intent hypotheses this week: “best cash back cards”, “double cash back cards”, “best credit cards 2026”. None of them replace a written renew price plus an exit path.

Goal: assemble a proof pack across 2 weeks, then decide on an annual for Nubank, Inter, or C6 Bank.

Renew autopsy for credit cards

real cashback. Simulate 3 categories from your statement on Nubank. If the number is missing outside the banner, treat the “cashback credit cards” discount as marketing.

card exit. Note cancel window and any penalty on Inter; mirror it on C6 Bank the same day.

effective annual fee. Add fee + fx + optional insurance over 12 months. Without that, the autopsy is incomplete.

Proof pack (before prepaid)

Proof	Nubank	Inter	C6 Bank
real cashback
card exit
effective annual fee
Month-12 price (screenshot)
Self-serve cancel URL
Offline export opens
Delta vs teaser (% ≈ 26)

Fill it in Tacoma with a SMB CTO as the human invoice owner. Empty cell = automatic veto on annual.

On card-picks-2026, if “cashback credit cards” cannot fit a line on the Nubank invoice within 48h, Compare Card files it as credit cards noise — not a prepaid reason.

On card-picks-2026, if “best cash back cards” cannot fit a line on the Inter invoice within 48h, Compare Card files it as credit cards noise — not a prepaid reason.

On card-picks-2026, if “double cash back cards” cannot fit a line on the C6 Bank invoice within 48h, Compare Card files it as credit cards noise — not a prepaid reason.

On card-picks-2026, if “best credit cards 2026” cannot fit a line on the Nubank invoice within 48h, Compare Card files it as credit cards noise — not a prepaid reason.

On card-picks-2026, if “no annual fee card” cannot fit a line on the Inter invoice within 48h, Compare Card files it as credit cards noise — not a prepaid reason.

On card-picks-2026, if “cash back cards” cannot fit a line on the C6 Bank invoice within 48h, Compare Card files it as credit cards noise — not a prepaid reason.

On card-picks-2026, if “credit cards” cannot fit a line on the Nubank invoice within 48h, Compare Card files it as credit cards noise — not a prepaid reason.

On card-picks-2026, if “cashback credit cards” cannot fit a line on the Inter invoice within 48h, Compare Card files it as credit cards noise — not a prepaid reason.