How to Become Catholic: The OCIA Steps, Start to Finish

1. How Do You Become Catholic?

You become Catholic by asking a Catholic parish to receive you, walking through its formation programme (OCIA), and receiving the sacraments of initiation: Baptism, Confirmation and the Eucharist. There is no form to download and no test to pass online. The Church receives people one at a time, by name, through a local parish and a bishop.

The path has three shapes, depending on where you start:

• Never baptized. You become a catechumen, and at the Easter Vigil you are baptized, confirmed and receive your first Holy Communion in one night. Every sin of your life is washed away in that water (CCC 1263).
• Baptized in another Christian church. Your baptism is almost always recognized. You are a candidate for reception into full communion: you make a profession of Catholic faith, go to confession, are confirmed and receive Communion.
• Baptized Catholic as a baby but never raised in it. You are already Catholic. You need catechesis and the sacraments you missed, usually first confession, Confirmation and first Communion.

Here is the hard thing, said plainly. Most people who feel this pull do nothing with it. They read for another year, watch another hundred videos, and wait for a certainty that never arrives by itself. Jesus said "Follow me" (Matthew 4:19), and the men who heard it left their nets the same day. No one knows the day or the hour (Mark 13:32). If God is drawing you, the drawing is the invitation. Call a parish this week.

2. What Is OCIA, and Why Did RCIA Change Its Name?

OCIA stands for the Order of Christian Initiation of Adults. It is the same process Americans called RCIA (the Rite of Christian Initiation of Adults) for decades, under a new English translation. The US bishops approved the revised translation in 2021, the Holy See confirmed it in 2024, parishes could begin using it on the First Sunday of Advent, 1 December 2024, and it became mandatory on Ash Wednesday, 5 March 2025.

The name changed because the Latin title is Ordo Initiationis Christianae Adultorum, and the word ordo is now rendered "Order", as in the Order of Mass. The order is a whole sequence of rites spread over months, so the word fits. The content is the same ancient path the early Church used to form new Christians. If your parish still says RCIA, it means the same thing. Some English-speaking countries outside the US still use RCIA or other names; ask the parish what it calls its programme and start anyway.

The process is restored from the first centuries. In the early Church, adults who wanted to become Christian were enrolled as catechumens, taught over a long period, examined, and baptized at Easter. The Second Vatican Council asked for that catechumenate to be restored (Sacrosanctum Concilium 64), and the rite was published in 1972. You are walking the road the martyrs walked.

3. What Are the Steps of OCIA?

OCIA has four periods and three major rites (called steps) between them, then a final period after Easter. Here is the whole map, in order, so nothing surprises you.

Period 1: Inquiry (the precatechumenate)

You ask questions. You attend Mass, meet the OCIA team, and hear the basic Gospel: who Jesus is, why he died and rose, what the Church is. There is no commitment yet. This period can last weeks or months. Use it honestly. Bring every objection you have.

Step 1: The Rite of Acceptance into the Order of Catechumens

When you are ready to follow Christ, you stand at the door of the church at a Sunday Mass. The priest asks what you seek. You answer: faith. The priest and your sponsor trace the sign of the cross on your forehead, ears, eyes, lips, heart and shoulders. From that moment you are a catechumen, joined to the Church in a real way, and the Church treats you as part of the household of Christ (CCC 1249). Already-baptized candidates have a parallel Rite of Welcoming instead, because they are already Christians.

Period 2: The catechumenate

This is the long middle. You learn the Creed, the sacraments, the moral life and prayer. On Sundays, catechumens are often dismissed after the homily to break open the readings together, because they do not yet receive the Eucharist. You start to pray daily, go to Mass weekly and live as a Christian before you are baptized.

Step 2: The Rite of Election

On or near the First Sunday of Lent, your parish sends you to the cathedral. The bishop asks your godparents whether you are ready, and you write your name in the Book of the Elect. You are now one of the elect, chosen by God for the sacraments at Easter. Baptized candidates usually attend a parallel Call to Continuing Conversion.

Period 3: Purification and enlightenment (Lent)

Lent becomes a retreat. On the Third, Fourth and Fifth Sundays of Lent, the parish prays the Scrutinies over the elect: prayers of healing and deliverance that ask God to uncover and heal what is weak and strengthen what is good. The Church hands over the Creed and the Lord's Prayer to you.

Step 3: The sacraments of initiation at the Easter Vigil

On Holy Saturday night, in a dark church lit by the new fire, you are baptized, then immediately confirmed, then you receive the Body and Blood of Christ for the first time. Your godparent stands behind you with a hand on your shoulder. Three sacraments, one night, and you walk out a Catholic.

Period 4: Mystagogy

From Easter to Pentecost you are a neophyte. You reflect on what happened to you and find your place in the parish. Do not skip this. The first months after Easter are when new Catholics quietly drift. Stay close.

4. Already Baptized in Another Church? Reception into Full Communion

If you were validly baptized as a Lutheran, Anglican, Methodist, Presbyterian, Baptist, Pentecostal or in most other Christian churches, the Catholic Church recognizes your baptism and will not baptize you again. Baptism leaves an indelible mark and cannot be repeated (CCC 1272). You are welcomed as a candidate for reception into full communion, The Church asks that you be treated as the Christian you already are, and US norms reserve the word "convert" for people coming to faith from unbelief.

A baptism is valid when it used water and the Trinitarian formula: "in the name of the Father, and of the Son, and of the Holy Spirit." Bring your baptismal certificate, or any record you have. If there is real doubt (no record, or a church that baptized "in the name of Jesus" only, as Oneness Pentecostals do), the priest may baptize you conditionally (canon 869). Latter-day Saints and Jehovah's Witnesses are baptized afresh, because the Church judges their baptisms invalid.

Reception is simple and powerful. You make your first confession. Then, usually at Mass, you say these words before the congregation: "I believe and profess all that the holy Catholic Church believes, teaches, and proclaims to be revealed by God." The priest or bishop receives you, confirms you, and you receive your first Catholic Communion.

It is often faster. Baptized candidates do not have to wait for the Easter Vigil. The US National Statutes for the Catechumenate even say it is preferable that reception not take place at the Easter Vigil, so the uniqueness of the baptisms that night stays clear, and candidates can be received at any time of year once they are ready. Many parishes still receive candidates at Easter for practical reasons. If you have been praying, reading and going to Mass for years, tell the priest that. Your formation can be fitted to you.

Coming from evangelical life, you do not lose what you had. Your love of Scripture, your personal friendship with Jesus, your hymns and your boldness come with you. You gain the Eucharist, the sacraments, the saints and the unity Christ prayed for (John 17:21). For the full side-by-side, read our Catholic vs Protestant comparison.

5. Orthodox Christians Coming Into Full Communion

Eastern Orthodox Christians already have valid sacraments: Baptism, Chrismation (Confirmation) and the Eucharist. The Catholic Church repeats none of them. The rite of initiation states that Eastern Christians who enter full communion need nothing more than a simple profession of Catholic faith, after any doctrinal and spiritual preparation suited to the person.

There is one thing many Orthodox inquirers do not know. You do not become "Roman" Catholic by default. An Orthodox Christian normally joins the Eastern Catholic Church of the same tradition: a Russian or Ukrainian Orthodox Christian would usually be enrolled in the Ukrainian Greek Catholic or another Byzantine Catholic Church, for example. You keep your liturgy, your calendar, your icons and your spirituality. Ask the priest to check this with the bishop before you are received, because it affects your records for life.

Catholics and Orthodox share the apostolic succession, the seven sacraments and devotion to the Mother of God. The open questions are the papacy and a few doctrinal formulations. Read our guides to the Eastern Orthodox Church and the Eastern Catholic Churches before you speak to a priest, and be honest with your Orthodox family about why you are coming. Charity costs nothing and keeps doors open.

6. Married, Divorced or Living Together: What Then?

Your marriage situation does not stop you from starting OCIA this week, but it can delay when you are received. Tell the OCIA leader or priest about every marriage in your history, yours and your spouse's, in the first meeting. Hiding it only lets it explode in March.

Married once, and your spouse was never married before

If neither of you is Catholic and neither of you was married before, the Church presumes your marriage is valid, whether it took place in a Protestant church, a registry office or on a beach. There is usually nothing to fix. If both of you are baptized, your marriage is already a sacrament.

You or your spouse were married before

The Church presumes every marriage is valid until shown otherwise, including a first marriage that ended in civil divorce. So if you or your spouse has a former spouse still living, the Church needs to examine that first marriage before you can be received. That means a petition for a declaration of nullity at the diocesan tribunal, or, in some cases involving unbaptized spouses, a dissolution in favour of the faith. Our guide to Catholic marriage and annulments walks through how that works, and our guide to divorce and separation covers the wider pain.

This is hard to hear. It is also why you should call now. Tribunal cases take months, sometimes longer, and the clock only starts when you ask. You can attend Mass, pray, go to inquiry sessions and become a catechumen while the case runs. Many parishes will not send you to the Rite of Election until it is settled, so begin the paperwork in your first weeks.

Living together without marriage

The Church will ask you either to marry or to live chastely before you receive the sacraments. That is a real cost. Read our guide on living together before marriage, then talk to the priest. Many couples have walked this road and married in the Church with joy.

Married to a Catholic outside the Church

If your spouse is Catholic and you married without the Church's permission or form, the marriage can usually be convalidated (blessed and made valid) once any earlier bonds are sorted. Couples often do this quietly in the weeks before Easter.

7. How Long Does It Take to Become Catholic?

For an unbaptized adult in the US, plan on about a year, and in many parishes it runs from autumn to Easter. The US National Statutes for the Catechumenate ask that the catechumenate, from the Rite of Acceptance through Lent, last at least one year of formation, and ordinarily from at least the Easter season of one year to the next. In practice parishes differ, and the timing is set by your readiness and your pastor.

• Unbaptized adults: roughly 8 to 18 months, ending at an Easter Vigil.
• Baptized Protestants: often a few months to a year, and reception can happen at any time of year once you are ready.
• Orthodox Christians: often weeks, with a profession of faith.
• Baptized Catholics never confirmed: usually a parish adult Confirmation programme of a few months.
• Marriage cases: add whatever time the tribunal needs.

Do not wait for "the next cycle" before calling. Many parishes start inquiry in late summer or September, but inquiry can begin any month, and a good priest will meet you this month. Every week you put off the call is a week of Sundays without the sacraments you are longing for. Easter comes once a year. Miss this one and you wait for the next.

8. How to Contact a Parish This Week (Word-for-Word Script)

Pick the Catholic parish nearest your home, look up its office number on its website or in a search, and call during office hours, usually weekday mornings. You belong to the parish whose boundaries you live in, though you may attend another. Then say this, out loud, exactly:

If nobody answers, leave the same message with your number, then send this email to the parish office the same day:

Your seven-day plan

1. Today: find the parish website and save the office number.
2. Tomorrow: call, using the script above.
3. Day 3: no answer? Send the email.
4. Day 4: find your baptismal certificate, if you have one, or ask the church that baptized you for a copy.
5. Day 5: read the Gospel of Mark, one chapter a day (it has 16).
6. This Sunday: go to Mass. Sit anywhere. Do not receive Communion yet; you may stay in the pew or come forward with arms crossed over your chest for a blessing.
7. After Mass: greet the priest at the door and tell him, "I want to become Catholic." Watch his face.

Still no reply in a week? Call again, or try the next parish. Parish offices are busy and understaffed. Persistence is part of the path, so press on.

The call takes five minutes; the months after it are the real work. Pro's audio devotionals and guided prayers fill the drive to OCIA, and the study library fills the gaps between sessions. Get Pro for $49 once, 30-day money-back guarantee if it does not help you pray.

9. What If I Am Afraid? Common Fears, Answered

Almost everyone who calls a parish is afraid of something. Name your fear, then look at it in daylight.

"My family will be angry."

Some families are. Jesus warned that following him could divide a household (Matthew 10:34-37). Love them, explain without arguing, and let them see you become kinder and more honest. You do not need their permission as an adult, and you do not need to win every debate before Easter.

"I have done terrible things."

Good. You are exactly who the Church is for. Baptism washes away every sin and all punishment due to sin (CCC 1263). If you are already baptized, confession does the same work of mercy. Paul called himself the foremost of sinners (1 Timothy 1:15). St. Augustine had a mistress and a son before he was baptized at 32. Bring your past with you. It is the reason to come.

"I do not understand or agree with everything yet."

Nobody does at the inquiry stage. That is what the process is for. Bring the hard questions: the papacy, Mary, the scandals, sexual ethics. A good OCIA leader will welcome them. By the time of reception you will be asked to profess what the Church teaches, so wrestle honestly now.

"The Church has hurt people."

Yes, and some of her leaders have committed grave crimes. That is true, and it is evil. We cover it honestly in our guide to Church scandals. People come in for Christ, the sacraments and the truth, and those are holy even when men are not.

"I will feel lost at Mass."

You will for a few weeks. Read our walk-through of every part of the Mass and you will know what is happening before you arrive.

"I am anxious, depressed or struggling to hold on."

Becoming Catholic is a beautiful thing to do in a dark season, and it is never a replacement for care. Keep taking any medication you are on, keep seeing your doctor, and tell your OCIA leader you are struggling. Anxiety and depression are illnesses, never proof of weak faith. Our guides to anxiety and depression can help.

10. Baptized Catholic as a Baby but Never Raised in It?

If you were baptized Catholic, you already belong to the Church, and you do not need to "become" Catholic. You need to come home and complete what was started. That usually means first confession, Confirmation and first Communion, through an adult Confirmation programme or alongside the OCIA group as a candidate for completing initiation.

Find out which parish baptized you and ask it for a fresh baptismal certificate; it will record any later sacraments in the margin. Then call your current parish with the same script and say, "I was baptized Catholic but never confirmed or made my first Communion." Read our guides to Confirmation and first Communion, and if you have been away for years, our guide to going back to confession will get you through the door.

11. Teens and Children Who Want to Become Catholic

Teenagers can become Catholic, and the Church takes a young person's faith seriously. Anyone who has reached the age of reason, about 7, is initiated with the same pattern as adults: an unbaptized teen is baptized, confirmed and receives first Communion together, usually at the Easter Vigil (canon 852). Parishes use an adapted process for children of catechetical age, often running alongside the parish's sacramental programme.

If you are under 18, the parish will want to involve your parents or guardians, and usually needs their consent. If your parents are not religious, ask one of them to come to a single meeting with the priest. Many parents who would never come to church themselves will support a teenager who wants to. If your parents forbid it, honour them, keep praying, keep reading, and talk to a priest about what you can do now. Your faith is real today, even if the sacraments have to wait.

Parents: if your child asks to become Catholic, say yes to the first meeting. You can learn alongside them. See our prayers for children for a simple way to start praying together at home.

12. Can I Become Catholic Online?

No. You cannot be baptized, confirmed or received over a screen. Sacraments are physical: water on your head, oil on your forehead, the Body of Christ placed in your hand or on your tongue. They require a priest or bishop, a church and your body in the room. The Church also needs your records, your sponsor and your parish.

Online can help with the learning. Some parishes run hybrid or online OCIA sessions, especially for people who work shifts, live far away or have small children. Solid online courses and video series can supplement your formation. But any website that offers to make you Catholic online, or sells you a certificate, is offering something the Church does not recognize. Use the internet to prepare, and walk into a parish to be received.

Housebound, disabled or living somewhere remote? Tell the parish. Priests can bring formation and sacraments to you, and dioceses can often make arrangements for people who truly cannot travel.

13. What to Read First

Read Scripture first, then the Catechism, then one good conversion story. That order keeps you anchored in Christ before you dive into arguments.

1. The Gospel of Mark, then the Gospel of John. Mark is short and urgent; John shows you who Jesus is. Use a Catholic edition such as the New American Bible or the RSV Catholic Edition so you have all 73 books (see why Catholic Bibles have 73 books).
2. The Acts of the Apostles, to see the early Church baptizing, breaking bread and praying.
3. The United States Catholic Catechism for Adults or the Compendium of the Catechism: readable, official summaries. Then dip into the full Catechism of the Catholic Church by topic.
4. A conversion story: St. Augustine's Confessions, G. K. Chesterton's Orthodoxy, or Scott and Kimberly Hahn's Rome Sweet Home if you are coming from Protestant ministry.
5. For teens: YOUCAT, the youth catechism.

Then read our foundation guides: Baptism, the Eucharist, confession and the saints. Choosing a saint's name for Confirmation? Our list of Confirmation saint names has over 70 with a reason for each.

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Not sure how to pray yet? Start with our guide to prayer, or let the free prayer generator help you put your first prayer into words tonight.

14. What Do Other Christians Say About Becoming Catholic?

Most Protestant churches do not require anything special for a Catholic to join them beyond a profession of faith or membership class, and many Protestants regard moving to Catholicism as unnecessary, since they see all baptized believers as already in the one Church. Baptists and Pentecostals generally hold that faith in Christ saves and that church membership follows. The Orthodox Church receives Catholics by various means, and regards itself as the one true Church in the same way the Catholic Church speaks of herself.

The Catholic Church teaches that the one Church of Christ "subsists in" the Catholic Church, governed by the successor of Peter and the bishops in communion with him (Lumen Gentium 8), and that all the baptized are joined to her in a real if imperfect communion (CCC 838). That is why the Church calls this step "full communion": you are completing something God began in your baptism, and coming to the table Christ set. Read our guide on "no salvation outside the Church" for what that teaching does and does not mean.

Jesus prayed on the night before he died "that they may all be one" (John 17:21). Every person received into full communion is part of the answer to that prayer.