Baby budget for the first year: the categories and a month-by-month sheet
A first-year baby budget is a month-by-month sheet that runs from about three months before the due date to the first birthday: ten budget categories, one of them for the income lost during leave, and a short list of benefits and deadlines to check. An average cost is a poor starting point, because what a first year costs depends on your health plan's deductible, what you already own, whether you need paid childcare and how many unpaid weeks of leave you take. The sheet starts from your own numbers; the official rules below (irs.gov, HealthCare.gov, dol.gov, USA.gov, checked on 20 October 2026) say which lines to add and by when.
Categories, without brand lists
Ten categories cover a first year. Keep each as a row; brands and models belong on a separate, personal list.
| Category | One-off or monthly | When it starts | What to type |
|---|---|---|---|
| Medical: prenatal visits, delivery, pediatric visits | Both | Now | Your plan's deductible, copays and out-of-pocket maximum |
| Health insurance premium change | Monthly | Month of birth | The difference between your current premium and the family rate |
| Sleep and nursery | One-off | Before birth | Crib or bassinet, mattress, bedding |
| Car seat and travel | One-off | Before birth | Car seat, stroller or carrier |
| Feeding | Monthly | Month of birth | Formula or pumping supplies, bottles, later solid food |
| Diapers and hygiene | Monthly | Month of birth | Diapers, wipes, bath items |
| Clothing | Monthly, by size | Before birth, then every few months | Small amounts, repeated |
| Childcare | Monthly | End of leave | The provider's quote |
| Income gap during leave | Weekly, summed by month | Birth | Unpaid weeks multiplied by weekly take-home pay |
| Cushion | Monthly transfer | Now | What you set aside for the unknowns |
Two rows are easy to miss: the premium can rise the month the baby joins the plan, and the unpaid weeks of leave can weigh more than any purchase.
Before and after birth: spreading purchases
Split the one-off purchases into three dates. Before the birth: what the drive home and the first nights need (car seat, a safe place to sleep, first clothes, the hospital bag). In the first three months: items whose need depends on the baby and on how feeding goes. After three months: larger sizes, a high chair, anything for a baby who sits or moves. Dating purchases moves part of the spending into months when income is normal again and leaves room for gifts and second-hand items. Each purchase gets a planned month and a "bought" column, so what is left to buy is a formula.
Benefits and deadlines to check
Each line is a check to run against your own situation, not an entitlement the sheet can decide.
| Item | Rule | Source |
|---|---|---|
| Adding the baby to an employer health plan | Notify the plan within 30 days of the birth; coverage is effective on the date of birth; the plan may require written notice | U.S. Department of Labor, EBSA, "Life Changes Require Health Choices" |
| Marketplace plan | Having a baby can qualify you for a Special Enrollment Period: enroll up to 60 days after the birth; coverage can start the day of the birth | HealthCare.gov, Special Enrollment Period |
| Medicaid and CHIP for the baby | Free or low-cost coverage for eligible children; apply any time of year; income limits vary by state | HealthCare.gov, Medicaid and CHIP |
| Social Security number | Easiest to request at the hospital with the birth certificate information; applying is free | USA.gov, Social Security card |
| Child Tax Credit | For the 2025 tax year: up to $2,200 per qualifying child (up to $1,700 refundable); the child must be under 17 at the end of the year and have a Social Security number valid for employment; full credit if annual income is not more than $200,000 ($400,000 filing jointly) | IRS, Child Tax Credit (page reviewed 21 September 2026) |
| Child and Dependent Care Credit | A percentage, depending on income, of up to $3,000 of work-related care expenses for one qualifying person ($6,000 for two or more); child under 13 | IRS, Tax Topic 602 (page reviewed 16 October 2026) |
| FMLA leave | Up to 12 workweeks of unpaid, job-protected leave in a 12-month period, after 12 months with the employer (not necessarily consecutive) and 1,250 hours worked in the 12 months before the leave, at a location where the employer has 50 or more employees within 75 miles; bonding leave must end within 12 months of the birth; mothers and fathers have the same right | U.S. Department of Labor, Wage and Hour Division, FMLA FAQ |
| Paid family leave | No federal law currently guarantees paid family and medical leave for private-sector workers; thirteen states and the District of Columbia have laws creating such programs | U.S. Department of Labor, Women's Bureau |
| WIC | Food, nutrition counseling and social service referrals for women, infants and children, subject to eligibility | USA.gov, Food help |
The 30-day and 60-day windows are the two deadlines to put in the sheet as dates calculated from the birth. The paperwork behind them is listed in the newborn paperwork checklist (US), and the leave rules in FMLA leave for a new baby: eligibility and the 12 weeks.
Month by month in a sheet
Months are columns, from three months before the due date to month 12; the ten categories are rows. Above them, one income row per parent, with each leave week marked paid or unpaid and summed into the month. The bottom of each column is income minus spending; a running balance next to it shows the lowest point of the year. Two conventions: only typed cells are inputs, everything else is a formula; every one-off purchase has a month. If you already keep a household budget, the baby sheet becomes a tab feeding one line into it, as in the free monthly budget template for Excel.
Example budget (fictitious data)
The figures below are invented to show how the columns behave; they are not averages.
| Line | Month −2 | Birth month | Month +2 | Month +6 |
|---|---|---|---|---|
| Take-home pay, both parents | $6,400 | $6,400 | $4,100 | $6,400 |
| One-off purchases | $900 | $150 | $0 | $250 |
| Medical (plan cost-sharing) | $120 | $1,800 | $60 | $60 |
| Premium increase | $0 | $180 | $180 | $180 |
| Feeding, diapers, clothing | $0 | $140 | $220 | $260 |
| Childcare | $0 | $0 | $0 | $1,350 |
| Other household spending | $4,200 | $4,200 | $4,200 | $4,200 |
| Month result | +$1,180 | −$70 | −$560 | +$100 |
In this fictitious case the hardest month is not the birth month, where the deductible lands, but month +2, when one parent's unpaid leave weeks remove $2,300 of income. Seeing that two months ahead is what the cushion row is for.
FAQ
How much does a baby cost in the first year?
No single average fits your household: the main drivers (your plan's cost-sharing, unpaid leave weeks, paid childcare) vary too much from one family to another. Build the figure from your own lines, month by month.
When do I have to add the baby to my health insurance?
Employer plan: notify the plan within 30 days of the birth, with coverage effective from the date of birth (Department of Labor). Marketplace plan: enroll up to 60 days after the birth, with coverage able to start the day of the birth (HealthCare.gov). Medicaid and CHIP: any time of year.
Which tax items should the budget record?
The Child Tax Credit (up to $2,200 per qualifying child for the 2025 tax year, Social Security number required for the child) and the Child and Dependent Care Credit (based on up to $3,000 of care expenses for one child), each to confirm on irs.gov for the tax year of the birth. Record them as checks, not as income: they arrive with the tax return.