Momyknows Discount Code SAVE30 is a public discount code for the maternity fashion brand Momyknows, advertised as giving up to 30% off orders placed at momyknows.com. Unlike a loyalty scheme or a funded account, it does nothing until you reach the payment stage of a purchase: you type SAVE30 into the promo or discount field, the basket total is recalculated, and the amount your card is charged reflects whatever proportion of the basket the code covers. Everything interesting about this offer therefore happens in the last two screens of a checkout, which is where most of the confusion about it also happens.
There is nothing to fund, deposit or withdraw
It is worth being blunt about the shape of this offer, because promo codes come in several very different forms and people carry assumptions between them. SAVE30 is a retail discount code. It reduces the price of goods at the moment of purchase. There is no wallet to top up, no minimum deposit to unlock a bonus balance, and no cash-out process to complete afterwards. The "money" involved never leaves your control in the first place — you simply pay less at the till.
That distinction matters when you are deciding how much diligence a code deserves. With an account-based bonus you have to worry about whether funds are locked, what conditions release them, and how long a payout takes. With a percentage code on a clothing order, the only questions are: what is the charge on screen, and can I get that money back if the garment does not fit. Both are answerable before you press the button.
It is also not a voucher in the fixed-cash-value sense. A gift certificate behaves a bit like stored value — you spend it down across one or more orders. SAVE30 is a percentage reduction, so its value scales with the basket rather than sitting as a balance anywhere. And it is not a referral code either: it is a public string not tied to your identity, your email address or anyone who introduced you to the shop, so no one is credited and there is no second-party reward to track.
Where the code sits relative to payment
On most online stores, the discount field appears either in the cart view or on the payment step of checkout, and it is frequently tucked inside a collapsible panel next to the order summary. Momyknows labels the field discount code, promo code or coupon depending on where you are looking. The important habit is to expand anything that looks closed before you enter card details, because once a payment is authorised the total is fixed and adding a code retroactively is not something a checkout can do for you.
Open momyknows.com and confirm the spelling in the address bar — one "m" in the middle. A similarly named company sells maternity supplements and is a different business entirely; SAVE30 will not apply there.
Build your basket, consulting the size guide at /pages/size-guide as you go, since maternity sizing shifts as a pregnancy progresses.
Move to the cart or checkout and locate the discount field before entering any payment information.
Type SAVE30 exactly, with no leading or trailing spaces. Codes are usually case-insensitive, but a pasted invisible space is a common cause of rejection.
Apply the code and read the order summary line by line. Look for a discount line and a revised subtotal, not just a success message.
Check the shipping line separately, then the final total, then pay.
Which payment methods qualify
The source of truth on accepted payment methods is the checkout itself, and no method-specific restriction on SAVE30 is published anywhere reliable. As a general rule with retail discount codes, the code is applied to the order subtotal before the payment method is selected, which means the choice of card, wallet or instalment provider does not usually change whether a code is honoured. What it can change is how a refund reaches you later, and that is the part worth thinking about in advance.
A few sensible checks apply to any store, Momyknows included:
Confirm the discount has already been applied before you commit to a payment method, so you are authorising the reduced figure rather than the full one.
If a store offers a wallet or instalment option, check that the amount being financed matches the discounted total shown in the summary.
Prefer a method you can trace. If a return is needed, a refund typically returns to the original payment route, which is simplest when that route is still active.
Watch the currency. Momyknows states free shipping on orders of $79 or more, which tells you prices are in US dollars; if your card settles in another currency, your bank's conversion sits on top of the discounted total.
The $79 threshold is where the discount can quietly cost you
This is the single mechanical interaction most worth understanding. Momyknows offers free shipping on orders of $79 or more. A percentage code reduces your subtotal, and a reduced subtotal can fall back under a free-shipping line that the pre-discount basket had cleared. The saving on the goods is then partly offset by a delivery charge reappearing on the summary.
The arithmetic is easy to reason about once you know the ceiling. A full 30% reduction means you pay 70% of the pre-discount figure — roughly three tenths comes off. For a basket sitting just above the free-shipping line, a reduction of that size is more than enough to push the post-discount subtotal back below it. Whether the store calculates the shipping threshold on the pre-discount or post-discount subtotal is not published for this offer, and it is not stated whether SAVE30 interacts with the threshold at all. So the practical move is to look at the shipping line after applying the code and treat whatever it shows as the answer.
If shipping does return, you have two options: accept it as a cost of the smaller order, or add an item so the discounted subtotal clears $79 again. The second is only worthwhile if you actually want the extra item. The brand's range is broad enough to make that plausible — event dressing, everyday maternity clothing, nursing apparel and swimwear all sit under one catalogue — but buying filler to dodge a delivery fee is rarely a net gain.
How the discount behaves if you send something back
Refunds are the closest thing this offer has to a cash-out, and the general principle across retail is that you are refunded what you paid, not the pre-discount ticket price. If a code took a proportion off a basket, that proportion is normally reflected in the refund on any returned item. That is not a penalty; it simply means the discount travels with the goods.
Momyknows publishes a returns and refund policy at /pages/return-and-refund. The specific return window, whether sale items are eligible, and how refunds are issued are things to read there before you order rather than after. Those details are not restated here because guessing at them would be actively unhelpful for maternity clothing, where a garment that fits at one stage may not fit weeks later.
One more knock-on effect to anticipate: if a partial return drops the value of a kept order below the free-shipping threshold, stores sometimes handle that differently from a full return. The refund policy page is the place to check how Momyknows treats it.
What is not published, and how to work around it
Several conditions that would normally shape a code like this are not documented for SAVE30. It is not known whether it excludes sale items, nursing bras, swimwear or plus sizes. It is not known whether there is a minimum spend, an expiry date, or a first-order-only restriction. "Up to 30%" is a ceiling rather than a promise, and percentage codes are commonly written so that they cover some categories and not others, or so that the reduction scales with basket value.
None of that makes the code hard to use, because the checkout resolves every one of those questions in seconds and at no cost. It does mean you cannot model your saving in advance, so the discipline is to build the basket you genuinely want first, apply the code, and let the revised total decide. Treat the number on screen as the real offer and the 30% as an upper bound.
Baskets where the mechanics work in your favour
Because the value of a percentage code scales with the basket, and because the $79 line rewards larger orders, the two mechanics point the same way. A consolidated order tends to produce both a bigger absolute reduction and a better chance of clearing the shipping threshold even after the discount lands.
Someone with a dated event ahead — a baby shower, gender reveal or maternity photoshoot — who wants one considered outfit and can bundle related pieces into the same order.
Anyone combining several needs at once, such as an event look plus nursing apparel, where the larger subtotal absorbs the discount without falling under the free-shipping line.
Plus-size shoppers looking at the baby shower category, where plus sizes are explicitly part of the range.
Shoppers who have already read the size guide and the returns page, so a fit problem becomes an administrative task rather than a lost payment.
It works less well for a single low-value item, where a proportional reduction on a modest total is a modest sum and shipping may well apply on top. In that case the code is not the variable that decides whether the purchase makes sense.
The short version
Momyknows Discount Code SAVE30 is a public, percentage-based discount code applied at checkout on momyknows.com, with a headline of up to 30% off and no funding, wallet or withdrawal step attached. The mechanics that actually affect what you pay are the discount field's position relative to the payment step, the $79 free-shipping threshold and how it behaves once the subtotal drops, and the refund route if something goes back. Read the size guide, read the returns policy, apply the code before entering card details, and judge the offer by the total the checkout shows rather than by the number in the code's name.
Promotional terms, eligibility and values are set by the provider and can change at any time. Always confirm the current terms on the official site before signing up or completing a purchase.