How much balance to keep on an ad card: Meta, Google and TikTok ledger data

The answer: what to keep on each platform

What actually gets charged: per charge and per card per day

This table is per person: we work out each person’s own figure, then take the median across people, so a few large customers don’t skew the result. The TikTok sample is very small, so treat it as observation only.

At least half of people never had more than $50 charged to one card in one day. That doesn’t mean $50 is enough for everyone: people who keep little on a card are capped by that balance, and higher-spend accounts have higher thresholds.

In our ledger, Meta’s single charges didn’t clearly grow with the number of charges (median per person in each band, with different people in each): about $2.30 for a card’s first 3 charges, about $2.95 for the 11th to 30th, and about $2.06 from the 31st on. Meta says its payment threshold rises with successful payments, but our ledger sees one card, not the account’s threshold, so this doesn’t show the threshold stayed the same.

How big the declined charge is

The declined amount is the amount of that authorization, not how much the card was short. Meta’s declines are mostly a few dollars, which suggests the available balance or limit was already low. Google’s cluster around $50, the hold amount commonly seen in our ledger, and these records come mainly from a few large customers.

The last row matters most: about 89% of Meta users with a balance decline had at least one within 24 hours after a successful charge on the same card. That suggests cards often run short during a run of charges, but it’s a per-person “at least once”, not a claim about most declines. So keep enough for a run of charges, not just one.

After a decline: retries and recovery

Recovery runs from a card’s first balance decline to the next approved authorization above $0 on the same card, not from the moment of top-up. Google’s cards are concentrated in a few large customers, so the per-card shares mainly reflect them, and a card that didn’t recover may simply have gone out of use; our ledger can’t tell.

Balance declines often come in runs (a median of 2 per person), and our ledger can’t tell platform retries, manual payments and new charges apart. A retry can’t succeed until the balance is topped up, and some BIN ranges charge a declined transaction fee each time, taken from the card balance first.

Work out your own number in three steps

1. Find the threshold in the places listed above
2. Work out one day of spend: add up the daily budgets of every ad account using this card
3. Add a margin: Google says the actual charge can be slightly above the threshold, and some BIN ranges have per-transaction fees

• Keep more for periods when nobody can top up, such as weekends, and count those days of spend
• Raise the balance when the threshold rises
• Keeping too much isn’t a problem: 30 minutes after the card’s last transaction, you can move the card balance back to your account balance, leaving $1 on the card

Limits of the data

• Scope: authorizations on RDVCC cards with a Meta, Google Ads or TikTok merchant name and merchant category 7311 (TikTok also 7333), 2026-08-10 to 2026-11-07
• Balance declines include declines for insufficient balance and for exceeding a limit or per-transaction range
• All samples are small, and Google and TikTok are very small. A few large customers account for many transactions (the top three people make about 88% on Google), so rows marked per transaction, per card or per run are most affected
• Our ledger shows the card, not an ad account’s threshold, budget or payment setting, and people who keep little on a card are capped by that balance
• Successful charges include ones later refunded. Don’t use these figures to rank the platforms; their users and BIN mix differ